CN102630090A - Optimization Method and optimization system for random access channel configuration parameters of neighborhood - Google Patents
Optimization Method and optimization system for random access channel configuration parameters of neighborhood Download PDFInfo
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- CN102630090A CN102630090A CN2012100790398A CN201210079039A CN102630090A CN 102630090 A CN102630090 A CN 102630090A CN 2012100790398 A CN2012100790398 A CN 2012100790398A CN 201210079039 A CN201210079039 A CN 201210079039A CN 102630090 A CN102630090 A CN 102630090A
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Abstract
The invention discloses an optimization method and optimization system for optimizing random access channel configuration parameters of a neighborhood. The method comprises: performing minimization of drive tests (MDT) configuration with optimized random access channel (RACH) configuration parameters to the neighborhood, and performing MDT configuration to user equipment (UE) in the neighborhood; receiving measuring results of random access (RA) performed by the UE according to MDT measurement configuration, and reporting the measuring results; assessing RACH performance of a neighborhood to be optimized according to the measuring results of the RA, and optimizing the RACH configuration parameters of the neighborhood to be optimized according to assessment results. The optimization method and the optimization system can accurately assess the RACH performance of the neighborhood, and performs optimization adjustment to the RACH parameters, thereby improving access performance of a communication system.
Description
Technical field
The present invention relates to sub-district RACH configuration parameter adjustment technology; Relate in particular to and use minimum road test (MDT; Minimization of Drive Tests) technology is to wireless communication system Long Term Evolution (LTE particularly; Long Term Evolution) (RACH, Random Access Channel) the configuration parameter optimization of the RACH under the framework (RO, RACH Optimization) method and system.
Background technology
The unreasonable meeting of RACH parameter configuration brings negative effect to user experience in the wireless communication system, particularly, can cause following problem: switching delay is big, the call setup success rate is low, handover success rate is low etc.For coverage and the access capacity that promotes the LTE system, and the experience that promotes the user, need the access performance of the RACH of sub-district in the network be optimized, make the access disposal ability at random of communication system and performance reach optimum.
The prerequisite that the RACH of sub-district is optimized is to obtain the current access performance at random in this sub-district, then according to the current sub-district index optimized of access performance decision-making needs at random, and then need to confirm the RACH configuration parameter optimized.
Defined subscriber equipment (UE in the LTE system; User Equipment) reports the mechanism of whether competing in number and the random access procedure of the targeting sequencing that sends in its random access procedure; But target according to RACH optimization; Only be difficult to carry out exactly the adjustment of RACH Parameter Optimization, because can't calculate the following performance index of RACH: the false drop rate of random access leader sequence, false alarm rate and loss according to these information through above-mentioned information.Wherein false drop rate is meant the leading probability that the detected leading but not UE in base station sends; False alarm rate be meant UE do not send leading and the base station wrong detection to leading probability; Loss is that UE has sent leading and probability that do not examined by the base station, and above-mentioned three indexs key index of RACH configuration optimization exactly.
According to above description, obtain the leading details that UE sends through the MDT technology, and the Node B (eNB through evolution; Evolved Node B) obtains the information of its detected random access guiding; And then calculating the sub-district in the index of access performance at random of section sometime, the random access guiding channel performance of evaluates cell is effectively made the configuration of RACH and to be optimized and revised; Elevator system inserts and performance of handoffs; Reduce the manual intervention degree simultaneously, save user network operation maintenance spending, reduce cost.
Regrettably, the configuration optimization concern to RACH is less in the prior art at present, and the technical scheme to the RACH configuration optimization that can be for reference is also few.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of sub-district RACH configuration parameter optimization method and system, and ability is the RACH performance of evaluates cell accurately, and the RACH parameter is optimized adjustment, has promoted the access performance of communication system.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of sub-district RACH configuration parameter optimization method comprises:
The MDT configuration that the RACH configuration parameter is optimized is carried out in the sub-district, and the MDT configuration is carried out to the user equipment (UE) in the said sub-district in said sub-district;
Said sub-district receives the measurement result of the access at random (RA, Random Access) that said UE carries out according to the MDT measurement configuration, and reports;
Measurement result according to said RA is assessed the RACH performance of sub-district to be optimized, is optimized according to the RACH configuration parameter of assessment result to said sub-district to be optimized.
The sub-district of preferably, carrying out the MDT configuration of RACH configuration parameter optimization is said adjacent cells of cells to be optimized.
Preferably, the number of the special-purpose random access guiding of said sub-district to be optimized is set to 0, and said method also comprises:
When the UE in the said adjacent cells of cells to be optimized switches to said sub-district to be optimized, carry out access at random based on competition.
Preferably, said sub-district is the reporting measuring result of the RA that receives, for:
Said sub-district receives after the information of the random access guiding that each UE reports and/or temporal information that each UE reports random access guiding information and/or each UE reports the geographical location information of random access guiding information, directly reports.
Preferably, said sub-district is the reporting measuring result of the RA that receives, for:
Said sub-district receives after the information of the random access guiding that each UE reports and/or temporal information that each UE reports random access guiding information and/or each UE reports the geographical location information of random access guiding information; Add up, when setting-up time arrival or the generation of setting incident, report.
Preferably, said RACH performance to sub-district to be optimized is assessed, for:
Confirm access success rate, handover success rate and the cutting off rate of sub-district further to determine whether to satisfy communicating requirement according to the measurement result of RA.
A kind of sub-district RACH configuration parameter optimization system comprises OAM system and mobile network, and said OAM system is connected with said mobile network; Wherein:
Said OAM system is used for the MDT configuration that the RACH configuration parameter is optimized is carried out in said mobile network's sub-district;
Said sub-district is used for the UE in the said sub-district is carried out the MDT configuration; And, after the measurement result that receives the RA that said UE carries out according to the MDT measurement configuration, report said OAM system;
Said OAM system also is used for, and according to the measurement result of said RA the RACH performance of sub-district to be optimized is assessed, and is optimized according to the RACH configuration parameter of assessment result to said sub-district to be optimized.
The sub-district of preferably, carrying out the MDT configuration of RACH configuration parameter optimization is said adjacent cells of cells to be optimized.
Preferably, said system also comprises:
The unit is set, and the number that is used for the special-purpose random access guiding of said sub-district to be optimized is set to 0;
Said UE also is used for, and when from said adjacent cells of cells to be optimized, switching to said sub-district to be optimized, carries out the access at random based on competition.
Preferably; Said sub-district also is used for; Receive after the information of the random access guiding that each UE reports and/or temporal information that each UE reports random access guiding information and/or each UE report the geographical location information of random access guiding information, directly report.
Preferably; Said sub-district also is used for; Receive after the information of the random access guiding that each UE reports and/or temporal information that each UE reports random access guiding information and/or each UE report the geographical location information of random access guiding information; Add up, when setting-up time arrival or the generation of setting incident, report.
Preferably, said OAM system also is used for, and confirms access success rate, handover success rate and the cutting off rate of sub-district further to determine whether to satisfy communicating requirement according to the measurement result of RA.
Among the present invention,, by the sub-district UE in this sub-district is carried out the MDT configuration again through the sub-district being carried out the MDT configuration that the RACH configuration parameter is optimized; , the sub-district reports after receiving the measurement result that inserts RA at random that UE carries out according to the MDT measurement configuration; Like this, can assess the RACH performance of sub-district to be optimized according to the measurement result of RA, thereby its RACH configuration parameter is optimized.The present invention is the RACH performance of evaluates cell accurately, and the RACH parameter is optimized adjustment, thereby has promoted the access performance of communication system.
Description of drawings
Fig. 1 is the flow chart of the sub-district RACH configuration parameter optimization method of the embodiment of the invention one;
Fig. 2 is the flow chart of the sub-district RACH configuration parameter optimization method of the embodiment of the invention two;
Fig. 3 is the flow chart of the sub-district RACH configuration parameter optimization method of the embodiment of the invention three.
Embodiment
Basic thought of the present invention is: write down and report its details in random access procedure by UE; The UE access information that combines eNB sidelights record then; By operation management maintain (OAM; Operation, Administration, Maintenance) system assesses the performance of the RACH of sub-district to be optimized, and carries out the optimization of RACH configuration parameter according to assessment result.
For making the object of the invention, technical scheme and advantage are clearer, below lift embodiment and with reference to accompanying drawing, to further explain of the present invention.
Embodiment one
Fig. 1 is the flow chart of the sub-district RACH configuration parameter optimization method of the embodiment of the invention one, and is as shown in Figure 1, and the sub-district RACH configuration parameter optimization method of this example specifically may further comprise the steps:
Step 101 is provided with the performance index that need monitoring to the OAM system.
In the OAM system performance index that the required monitoring of RO is carried out in the sub-district are set, and the threshold value that triggers each performance index of RO, these performance index comprise at least a of following performance index: access success rate, handover success rate and the cutting off rate etc. of sub-district.
Those skilled in the art are to be understood that; The OAM system is connected with mobile network's core net; Can realize management maintenance to related network elements among the mobile network; Owing to realize that through the OAM system related network elements among the mobile network is carried out management maintenance to be realized being easier to, also belong to prior art, the present invention repeats no more, and it realizes details.
Step 102, the OAM system is issued to each sub-district with capability configuration parameters.
The needed performance information of RO is gathered in each sub-district in the OAM system configuration network.
Above-mentioned performance information mainly is the correlated performance information of UE wireless access sub-district.
Step 103, each sub-district reports performance data.
After each sub-district received the performance monitoring configuration information of OAM system, according to the performance monitoring parameter that is disposed, correspondence was gathered access information, the handover information of UE in the sub-district, and these information reporting are arrived the OAM system;
Step 104, OAM system confirm to carry out the sub-district of RO to the access and the performance of handoffs assessment of each sub-district.
The OAM system carries out statistical analysis to the data of access performance at random that each sub-district reports, and determines the sub-district that need carry out RO, and the RACH configuration parameter of sub-district is optimized adjustment.
Those skilled in the art are to be understood that; The data of access performance at random that report according to the sub-district are confirmed RACH configuration parameter good and bad of this sub-district and are to realize easily to disposing wherein that relatively poor RACH configuration parameter is optimized; Because each operator and each sub-district are different to the performance requirement that inserts at random; Therefore the RACH configuration parameter that each sub-district disposed is also had nothing in common with each other, carry out also difference of the related parameter of RO, the present invention gives unnecessary details it no longer one by one and realizes details.
Embodiment two
Fig. 2 is the flow chart of the sub-district RACH configuration parameter optimization method of the embodiment of the invention two, and is as shown in Figure 2, and the sub-district RACH configuration parameter optimization method of this example specifically may further comprise the steps:
Step 201, the through performance monitoring need be carried out RO to Cell1.
When the OAM system decision-making need insert configuration parameter and is optimized certain sub-district (cell1) at random, all of its neighbor sub-district of this sub-district of OAM system searching (cell2, cell3).
In this example, three sub-districts (cell1, cell2, cell3) for example describes, wherein, cell2 and cell3 are the adjacent area of cell1.
Step 202 selects all adjacent areas (Cell2, Cell3) of Cell1 to issue the MDT measurement configuration.
The OAM system carries out Logged MDT measurement configuration to adjacent area Cell2 and the Cell3 of Cell1, and the area configurations in the measurement configuration (AreaConfiguration) comprises the Cell1 sub-district.
Step 203, opening M DT measures.
Concrete, in order fully to obtain the random access information of sub-district, the number that the OAM system is provided with the special-purpose random access guiding of Cell1 is 0, so that the UE of other sub-districts when switching toward cell1, can carry out the access at random based on competition.
Step 204, the Uu interface is realized the LoggedMDT measurement configuration.
Cell2, cell3 are issued to all UE in each sub-district with measurement configuration information through LoggedMeasurementsConfiguration message after receiving the MDT measurement configuration information of OAM system transmission.
After each UE receives MDT measurement configuration parameter, preserve relevant measurement parameter.
Step 205, along with UE the moving of Serving cell, wherein part UE proceeds to the switching of Cell1, supposes that these UE are UE1～UEn, these UE carry out the access at random based on competition at Target cell Cell1 in the process of switching to cell1.
The measurement configuration parameter of the logged MDT that preserves according to UE, UE1～UEn is in the process that Cell1 inserts at random, and the MDT that is correlated with measures, the information that record UE sends random access guiding, and the corresponding time of sending each random access guiding.
Step 206 is treated UE after Cell1 inserts successfully, and UE arrives eNB with the reporting measuring result of Logged MDT.
Step 207, eNB parses the measurement result of Logged MDT, gives the OAM system with the information reporting of the random access guiding of each UE.
The OAM system log (SYSLOG) is also stored cell information, UE information, random access guiding information, sends leading temporal information, is sent leading geographical location information etc.
The OAM system carries out statistical analysis to the data of access performance at random that each sub-district reports, and determines the sub-district that need carry out RO, and the RACH configuration parameter of sub-district is optimized adjustment.
Embodiment three
Fig. 3 is the flow chart of the sub-district RACH configuration parameter optimization method of the embodiment of the invention three, and is as shown in Figure 3, and the sub-district RACH configuration parameter optimization method of this example specifically may further comprise the steps:
Step 301, the through performance monitoring need be carried out RO to Cell1.
ENB receives the notification message that Cell1 carries out RO that is directed against of OAM system transmission, begins the UE access information of Cell1 sub-district is added up.
Step 302 is opened the UE access information statistics among the Cell1.
Step 303, the UE access lead information of statistics sub-district, and be reported to the OAM system.
Cell1 writes down preface information, the temporal information of its detected each UE random access guiding, and these information reporting are arrived the OAM system.
The OAM system log (SYSLOG) is also stored cell information, the random access guiding relevant information that Cell1 adds up, and sends leading time or positional information.
Step 304, the access information that OAM utilizes access information that UE reports and eNB to report carries out the RO of Cell1.
The OAM system utilizes the random access information that each UE gathers in the Cell1, and all random access informations in the sub-district of Cell1 collection, and the RACH performance of Cell1 is carried out comprehensive assessment.
The OAM system is according to the RACH Performance Evaluation result of Cell1, and the RACH configuration parameter of sub-district is optimized adjustment.
Step 306, OAM system with the optimization of Cell1 after the RACH configuration parameter be issued to eNB, eNB broadcasts in the sub-district through broadcast, RO process of Cell1 is accomplished.
In sum, utilize cooperatively interacting of UE, eNB and OAM system, and combine the MDT technology, the present invention has realized the performance of the RACH of sub-district is carried out comprehensive assessment, and carries out the optimization of the RACH configuration of sub-district according to these appreciation information.The present invention is the RACH performance of evaluates cell accurately, and the RACH parameter is optimized adjustment, has promoted the access performance of communication system.
The present invention has also put down in writing a kind of sub-district RACH configuration parameter optimization system, comprises OAM system and mobile network, and the OAM system is connected with said mobile network; Wherein:
Said OAM system is used for the MDT configuration that the RACH configuration parameter is optimized is carried out in said mobile network's sub-district;
Said sub-district is used for the UE in the said sub-district is carried out the MDT configuration; And, after the measurement result that receives the RA that said UE carries out according to the MDT measurement configuration, report said OAM system;
Said OAM system also is used for, and according to the measurement result of said RA the RACH performance of sub-district to be optimized is assessed, and is optimized according to the RACH configuration parameter of assessment result to said sub-district to be optimized.
The sub-district of the MDT configuration of the above-mentioned RACH of carrying out configuration parameter optimization is said adjacent cells of cells to be optimized.
Said system also comprises: the unit is set, and the number that is used for the special-purpose random access guiding of said sub-district to be optimized is set to 0;
Said UE also is used for, and when from said adjacent cells of cells to be optimized, switching to said sub-district to be optimized, carries out the access at random based on competition.
Above-mentioned sub-district also is used for, and receives after the information of the random access guiding that each UE reports and/or temporal information that each UE reports random access guiding information and/or each UE report the geographical location information of random access guiding information, directly reports.The sub-district here is the sub-district of the MDT configuration of carrying out the optimization of RACH configuration parameter.
Above-mentioned sub-district also is used for; Receive after the information of the random access guiding that each UE reports and/or temporal information that each UE reports random access guiding information and/or each UE report the geographical location information of random access guiding information; Add up, when setting-up time arrival or the generation of setting incident, report.The sub-district here is the sub-district of the MDT configuration of carrying out the optimization of RACH configuration parameter.
Above-mentioned OAM system also is used for, and confirms access success rate, handover success rate and the cutting off rate of sub-district further to determine whether to satisfy communicating requirement according to the measurement result of RA.
Those skilled in the art are to be understood that; Sub-district of the present invention RACH configuration parameter optimization system realizes on the existing mobile communication network basis; The structure of system is identical with the existing mobile communication network structure, and sub-district of the present invention RACH configuration parameter optimization system is the related network elements in the existing mobile communication network have been carried out function corresponding expand and realize; Among the present invention, the network element of only function having been expanded has carried out the emphasis description.Sub-district of the present invention RACH configuration parameter optimization system can be with reference to the associated description of aforesaid embodiment one to embodiment three and understand, and its network architecture can be understood referring to figs. 1 through structure shown in Figure 3.
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. sub-district RACH configuration parameter optimization method is characterized in that said method comprises:
The minimum road test MDT configuration that RACH RACH configuration parameter is optimized is carried out in the sub-district, and the MDT configuration is carried out to the user equipment (UE) in the said sub-district in said sub-district;
Said sub-district receives the measurement result that inserts RA at random that said UE carries out according to the MDT measurement configuration, and reports;
Measurement result according to said RA is assessed the RACH performance of sub-district to be optimized, is optimized according to the RACH configuration parameter of assessment result to said sub-district to be optimized.
2. method according to claim 1 is characterized in that, the sub-district of carrying out the MDT configuration of RACH configuration parameter optimization is said adjacent cells of cells to be optimized.
3. method according to claim 2 is characterized in that the number of the special-purpose random access guiding of said sub-district to be optimized is set to 0, and said method also comprises:
When the UE in the said adjacent cells of cells to be optimized switches to said sub-district to be optimized, carry out access at random based on competition.
4. method according to claim 1 is characterized in that, said sub-district is the reporting measuring result of the RA that receives, for:
Said sub-district receives after the information of the random access guiding that each UE reports and/or temporal information that each UE reports random access guiding information and/or each UE reports the geographical location information of random access guiding information, directly reports.
5. method according to claim 1 is characterized in that, said sub-district is the reporting measuring result of the RA that receives, for:
Said sub-district receives after the information of the random access guiding that each UE reports and/or temporal information that each UE reports random access guiding information and/or each UE reports the geographical location information of random access guiding information; Add up, when setting-up time arrival or the generation of setting incident, report.
6. according to claim 4 or 5 described methods, it is characterized in that said RACH performance to sub-district to be optimized is assessed, for:
Confirm access success rate, handover success rate and the cutting off rate of sub-district further to determine whether to satisfy communicating requirement according to the measurement result of RA.
7. a sub-district RACH configuration parameter optimization system comprises OAM system and mobile network, and said OAM system is connected with said mobile network; It is characterized in that:
Said OAM system is used for the MDT configuration that the RACH configuration parameter is optimized is carried out in said mobile network's sub-district;
Said sub-district is used for the UE in the said sub-district is carried out the MDT configuration; And, after the measurement result that receives the RA that said UE carries out according to the MDT measurement configuration, report said OAM system;
Said OAM system also is used for, and according to the measurement result of said RA the RACH performance of sub-district to be optimized is assessed, and is optimized according to the RACH configuration parameter of assessment result to said sub-district to be optimized.
8. system according to claim 7 is characterized in that, the sub-district of carrying out the MDT configuration of RACH configuration parameter optimization is said adjacent cells of cells to be optimized.
9. system according to claim 8 is characterized in that, said system also comprises:
The unit is set, and the number that is used for the special-purpose random access guiding of said sub-district to be optimized is set to 0;
Said UE also is used for, and when from said adjacent cells of cells to be optimized, switching to said sub-district to be optimized, carries out the access at random based on competition.
10. system according to claim 7; It is characterized in that; Said sub-district also is used for; Receive after the information of the random access guiding that each UE reports and/or temporal information that each UE reports random access guiding information and/or each UE report the geographical location information of random access guiding information, directly report.
11. system according to claim 7; It is characterized in that; Said sub-district also is used for; Receive after the information of the random access guiding that each UE reports and/or temporal information that each UE reports random access guiding information and/or each UE report the geographical location information of random access guiding information, add up, arrive or the setting incident reports when taking place at setting-up time.
12., it is characterized in that said OAM system also is used for according to claim 10 or 11 described systems, confirm access success rate, handover success rate and the cutting off rate of sub-district further to determine whether to satisfy communicating requirement according to the measurement result of RA.
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| WO2022117023A1 (en) * | 2020-12-04 | 2022-06-09 | 维沃移动通信有限公司 | Random access method and apparatus, terminal, and network side device |
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Application publication date: 20120808 |