CN106211232A - The appraisal procedure of Physical Cell Identifier and device in LTE network - Google Patents
The appraisal procedure of Physical Cell Identifier and device in LTE network Download PDFInfo
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- CN106211232A CN106211232A CN201610525071.2A CN201610525071A CN106211232A CN 106211232 A CN106211232 A CN 106211232A CN 201610525071 A CN201610525071 A CN 201610525071A CN 106211232 A CN106211232 A CN 106211232A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/345—Interference values
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
The present invention relates to appraisal procedure and the device of Physical Cell Identifier in a kind of LTE network.Described method includes step: before in frequency sweep data, the PCI of certain frequency updates, obtain a PCI and the 2nd PCI of each sampled point intermediate-frequeney point respectively, after the PCI renewal to frequency described in frequency sweep data, obtain the 3rd PCI and the 4th PC of each sampled point intermediate-frequeney point respectively, then acquisition the oneth mod conflict sampled point and the 2nd mod conflict sampled point, final acquisition mod conflict lifting ratio；After updating according to MR data acquisition PCI, the PCI interference value of frequency promotes amplitude；The quality compared to the PCI before updating of the PCI after amplitude assessment updates is promoted according to mod conflict lifting ratio and PCI interference value.The present invention does not relies on accuracy and the integrity of MR sampling, pays close attention to road network quality and the whole network quality, has universality.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of LTE (Long Term Evolution, General Mobile
The Long Term Evolution of communication technology) appraisal procedure of Physical Cell Identifier and Physical Cell Identifier in a kind of LTE network in network
Apparatus for evaluating.
Background technology
LTE is that (The 3rd Generation Partnership Project, third generation affiliate counts by 3GPP
Draw) UMTS (Universal Mobile Telecommunications System, the universal mobile communications system that organize to set up
System) Long Term Evolution of technical standard.LTE system introduces OFDM (Orthogonal Frequency Division
Multiplexing, OFDM) and the key such as MIMO (Multi-Input&Multi-Output, multiple-input and multiple-output)
Technology, significantly increases spectrum efficiency and message transmission rate；Support various bandwidth is distributed, and supports whole world main flow 2G (the
Secondary mobile communication technical specification)/3G (second filial generation mobile communication technical specification) frequency range and some newly-increased frequency ranges, thus frequency spectrum divides
Joining more flexible, power system capacity and covering are also obviously improved.The more flattening of the LTE system network architecture is simplified, and decreases net
Network node and system complexity, thus reduce Time Delay of Systems, also reduce network design and maintenance cost.
PCI (physical-layer Cell identity, Physical Cell Identifier) is for distinguishing the wireless of different districts
Signal, span is 0-503.Gradually develop huge along with LTE network, PCI the whole network plans the demand of (turning over frequency) day by day automatically
Highlight.To turn over PCI scheme quality be estimated time, traditional scheme according to PCI interference value promote amplitude realize, such as following formula institute
Show:
PCI interference total value passes through interference coefficient and with frequency based on MR (Measurement Report, measurement report) data
Community correlation coefficient obtains.If PCI interference value promotes amplitude and reaches more than 20%, it may be considered that carry out turning over PCI and optimize lifting, i.e.
Use the PCI after updating；If PCI interference value promotes amplitude less than 15%, it is proposed that first network area is carried out after structure optimization again
Carry out turning over PCI and optimize lifting.
But, promote amplitude assessment according to PCI interference value and turn over the good and bad method of PCI scheme and there is following defect:
(1) PCI interference total value is adopted to count by MR and is calculated, the mould that MR sampling is set up so this appraisal procedure places one's entire reliance upon
Type the most accurately and completely, when MR adopt several quality too low time can affect PCI interference total value accuracy, be unfavorable for that PCI is turned in assessment
The quality of scheme；
(2) though MR height of sampling accurately and completely, the interference model of foundation completely and network actual environment symbol with, but
PCI interference value promotes amplitude and promotes and represent the whole network oeverall quality and promote, but fails to represent the road network quality paid close attention to and be
No lifting, turns over PCI scheme and is entirely possible to reach by sacrificing road network quality the lifting of the whole network quality；
(3) when calculating PCI and disturbing total value, a most unified standard, all there is respective secret in each producer
Algorithm, so the PCI interference total value calculated is not consistent, it is the most comparable that the PCI interference value that each producer obtains promotes amplitude
Property, can not clearly promote amplitude reaches how much can implement by the lifting amplitude of PCI interference value.
Summary of the invention
Based on this, it is necessary to for the problems referred to above, it is provided that the appraisal procedure of Physical Cell Identifier and dress in a kind of LTE network
Put, pay close attention to road network quality and the whole network quality, the unified standard turning over PCI scheme evaluation, there is universality.
In order to achieve the above object, the technical scheme that the present invention takes is as follows:
The appraisal procedure of Physical Cell Identifier in a kind of LTE network, including step:
Before the PCI of certain frequency updates in frequency sweep data, obtain described in each sampled point the first of frequency respectively
A PCI that strongest signal strength is corresponding and the 2nd PCI corresponding to the secondary signal intensity of described frequency is described first the strongest
The difference of signal intensity and described secondary signal intensity is in preset range；
After the PCI of frequency described in frequency sweep data is updated, obtain described in each sampled point the 3rd of frequency the respectively
The 3rd PCI that strongest signal strength is corresponding and the 4th PCI corresponding to the 4th signal intensity of described frequency is described 3rd the strongest
The difference of signal intensity and described 4th signal intensity is in described preset range；
A mod conflict sampled point in all sampled points is obtained, according to institute according to a described PCI and described 2nd PCI
State the 3rd PCI and described 4th PCI and obtain the 2nd mod conflict sampled point in all sampled points；
According to a described mod conflict sampled point conflict with the ratio of total sampled point and described 2nd mod sampled point and
The difference of the ratio of described total sampled point, it is thus achieved that mod conflicts lifting ratio；
After updating according to MR data acquisition PCI, the PCI interference value of described frequency promotes amplitude；
The PCI after amplitude assessment updates is promoted compared to more according to described mod conflict lifting ratio and described PCI interference value
The quality of the PCI before new.
The apparatus for evaluating of Physical Cell Identifier in a kind of LTE network, including:
Data update front PCI acquisition module, before the PCI of certain frequency in frequency sweep data updates, obtain respectively
A PCI that first strongest signal strength of frequency described in each sampled point is corresponding and the secondary signal intensity of described frequency
The difference of the 2nd corresponding PCI, described first strongest signal strength and described secondary signal intensity is in preset range；
PCI acquisition module after data renewal, for, after the PCI renewal to frequency described in frequency sweep data, obtaining respectively
The 3rd PCI that 3rd strongest signal strength of frequency described in each sampled point is corresponding and the 4th signal intensity of described frequency
The difference of the 4th corresponding PCI, described 3rd strongest signal strength and described 4th signal intensity is in described preset range；
Conflict sampled point obtains module, for obtaining in all sampled points the according to a described PCI and described 2nd PCI
One mod conflict sampled point, obtains the 2nd mod conflict sampling in all sampled points according to described 3rd PCI and described 4th PCI
Point；
Conflict lifting ratio obtains module, for the ratio according to described mod conflict sampled point and a total sampled point with
And the difference of the ratio of described 2nd mod conflict sampled point and described total sampled point, it is thus achieved that mod conflicts lifting ratio；
Interference value promotes amplitude and obtains module, the PCI interference value of described frequency after updating according to MR data acquisition PCI
Lifting amplitude；
PCI evaluation module, assesses more for promoting amplitude according to described mod conflict lifting ratio and described PCI interference value
The PCI after the Xin quality compared to the PCI before updating.
In LTE network of the present invention, the appraisal procedure of Physical Cell Identifier and device, when being compared to each other with prior art, possess
Advantages below:
(1) accuracy and the integrity of MR sampling it are not entirely dependent on: the Data Source of present invention assessment is in sweeping of surveying
Frequency evidence, by turn over frequency (renewal) before and after PCI, be directly substituted into actual measurement frequency sweep data model (mod conflict lifting ratio public affairs
Formula), it is thus achieved that mod conflicts lifting ratio, and comprehensive mod conflict lifting ratio and PCI interference value promote amplitude and weigh and turn over PCI scheme
Quality, broken away from Traditional measurements scheme places one's entire reliance upon MR sampling accuracy and the problem of integrity；
(2) reflection road network quality: the Data Source of present invention assessment is in the frequency sweep data of actual measurement, front by turning over frequency (renewal)
After PCI, be directly substituted into the frequency sweep data model (mod conflict lifting ratio formula) of actual measurement, it is thus achieved that mod conflicts lifting ratio,
Comprehensive mod conflict lifting ratio and PCI interference value promote amplitude and weigh the quality turning over PCI scheme, obtain according to frequency sweep data
Mod conflict lifting ratio directly embody the quality of road network, when the quality of road network and the quality of the whole network all promote, could at last
One scheme packaged；
(3) there is universality: the Data Source of present invention assessment is in the frequency sweep data of actual measurement, before and after turning over frequency (renewal)
PCI, be directly substituted into the frequency sweep data model (mod conflict lifting ratio formula) of actual measurement, it is thus achieved that mod conflicts lifting ratio, combines
Close mod conflict lifting ratio and PCI interference value promotes amplitude and weighs the quality turning over PCI scheme, unified to promote range value
Standard, has universality.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the appraisal procedure embodiment of Physical Cell Identifier in LTE network of the present invention；
Fig. 2 is the structural representation of the apparatus for evaluating embodiment of Physical Cell Identifier in LTE network of the present invention；
Fig. 3 is the structural representation of PCI acquisition module embodiment before data of the present invention update；
Fig. 4 is the structural representation of PCI acquisition module embodiment after data of the present invention update；
Fig. 5 be the present invention conflict sampled point obtain module embodiments structural representation；
Fig. 6 be the present invention conflict lifting ratio obtain module embodiments structural representation；
Fig. 7 is the structural representation of PCI evaluation module embodiment of the present invention.
Detailed description of the invention
By further illustrating the technological means and the effect of acquirement that the present invention taked, below in conjunction with the accompanying drawings and the most real
Execute example, to technical scheme, carry out clear and complete description.
The description of specific distinct unless the context otherwise, the element in the present invention and assembly, the shape that quantity both can be single
Formula exists, it is also possible to presented in multiple, this is not defined by the present invention.Although the step in the present invention is entered with label
Go arrangement, but be not used to limit the precedence of step, unless expressly stated the order of step or holding of certain step
Based on row needs other steps, otherwise the relative rank of step is adjustable in.In the present invention first, second,
Once with the second inferior word is only used for distinguishing same technical characteristic, is not limited the order of technical characteristic and quantity etc.
Fixed.
As it is shown in figure 1, the appraisal procedure of Physical Cell Identifier in a kind of LTE network, including step:
S110, in frequency sweep data certain frequency PCI update before, obtain frequency described in each sampled point respectively
A PCI that first strongest signal strength is corresponding and the 2nd PCI corresponding to the secondary signal intensity of described frequency, described first
The difference of strongest signal strength and described secondary signal intensity is in preset range；
S120, after the PCI of frequency described in frequency sweep data is updated, obtain frequency described in each sampled point respectively
The 3rd PCI that 3rd strongest signal strength is corresponding and the 4th PCI corresponding to the 4th signal intensity of described frequency, the described 3rd
The difference of strongest signal strength and described 4th signal intensity is in described preset range；
S130, obtain a mod in all sampled points according to a described PCI and described 2nd PCI and conflict sampled point, root
The 2nd mod conflict sampled point in all sampled points is obtained according to described 3rd PCI and described 4th PCI；
S140, conflict with the ratio of total sampled point and described 2nd mod sampling according to a described mod conflict sampled point
The difference of point and the ratio of described total sampled point, it is thus achieved that mod conflicts lifting ratio；
S150, according to MR data acquisition PCI update after described frequency PCI interference value promote amplitude；
S160, lifting ratio of conflicting according to described mod and described PCI interference value promote the PCI phase after amplitude assessment updates
Quality than the PCI before updating.
In step S110 and step S120, it is updated PCI PCI i.e. turns over frequency.Accurate in view of assess
Property, need by stages to be estimated turning over PCI scheme.So, in one embodiment, obtain respectively described in each sampled point
The step of the 2nd PCI that the secondary signal intensity of frequency is corresponding may include that
S1101, in each sampled point, determine that difference with the first strongest signal strength is less than the first predetermined threshold value respectively
First time signal intensity, and strong less than the second time signal of the second predetermined threshold value with the difference of the first strongest signal strength
Degree, described first predetermined threshold value is less than described second predetermined threshold value；
If the strongest signal strength of some sampled point intermediate-frequeney point is less than certain value, then illustrate that the signal of this sampled point is strong
Spend the most weak, can directly this sampled point be abandoned.So, in one embodiment, described first strongest signal strength is more than pre-
If signal strength threshold.Preset signal strength threshold value could be arranged to-110dBm (decibel milli X) etc..
First predetermined threshold value and the second predetermined threshold value can determine according to actual needs, such as can be by the first predetermined threshold value
It is set to 3dB, the second predetermined threshold value is set to 6dB.Signal intensity and second time signal intensity are only used for distinguishing for the first time
Unlike signal intensity in binary signal intensity.
S1102, to obtain first time PCI corresponding to described first time signal intensity and described second time signal intensity corresponding
Second time PCI；
PCI and second time PCI is only used for distinguishing PCI different in the 2nd PCI for the first time.Can be direct according to frequency sweep data
Obtain the PCI corresponding with second time signal intensity for PCI that signal intensity is corresponding for the first time.
Equally, in one embodiment, the 4th signal intensity obtaining frequency described in each sampled point respectively is corresponding
The step of the 4th PCI may include that
S1201, in each sampled point, determine that difference with the 3rd strongest signal strength is preset less than described first respectively
The third time signal intensity of threshold value, and with the difference of the 3rd strongest signal strength less than the 4th time of described second predetermined threshold value
Signal intensity；
In one embodiment, described 3rd strongest signal strength is more than preset signal strength threshold value.Preset signal strength
Threshold value could be arranged to-110dBm etc..
In order to ensure the accuracy of assessment, the first predetermined threshold value and the second predetermined threshold value in this step are step S1101
In the first predetermined threshold value and the second predetermined threshold value.Signal intensity and the 4th signal intensity are only used for distinguishing the 4th letter for the third time
Unlike signal intensity in number intensity.
S1202, obtain third time PCI corresponding to described third time signal intensity and described 4th signal intensity correspondence
The 4th PCI；
PCI and the 4th PCI is only used for distinguishing PCI different in the 4th PCI for the third time.Can be direct according to frequency sweep data
Obtain the PCI that signal intensity the is corresponding for the third time and PCI that the 4th time signal intensity is corresponding.
Although two interval situations having been carried out example it should be noted that above-mentioned, but this not having be done by the present invention
Go out to limit.Such as, user can find the PCI corresponding with the signal intensity in strongest signal strength difference 3dB, it is also possible to finds
The PCI the most corresponding with the signal intensity in strongest signal strength difference 3dB and in 6dB, it is also possible to find strong with peak signal
Degree differs the PCI that the signal intensity in 3dB, in 6dB with 9dB is the most corresponding.In order to ensure efficiency and the accuracy of assessment, this
Invention is preferably the PCI found in two intervals, such as, find the signal in differing 3dB with strongest signal strength and in 6dB strong
The PCI that degree is the most corresponding.
In order to be more fully understood that the present invention obtains the process of PCI, illustrate below in conjunction with concrete frequency sweep data.
As shown in table 1, a part of data of the frequency sweep data of actual measurement before updating for PCI, H is classified as the signal intensity of frequency sweep.
Each sampled point can be obtained according to time and longitude and latitude, as shown in table 1, have sampled point 1 and sampled point 2 the two sampled point.
PCI renewal to certain frequency i.e. keeps other data in form constant, and the PCI that in arranging E, this frequency is corresponding is updated.
As a example by frequency 38400, this frequency strongest signal strength in sampled point 1 is-95.94dBm, meets signal strong
Degree is more than-110dBm, and corresponding PCI value is 137.The signal intensity of the homogeneous-frequency adjacent-domain in strongest signal strength 3dB is-
The PCI that 98.43dBm ,-98.43dBm are corresponding is 374.
Table 1 PCI updates forward part frequency sweep data
In step s 130, mod conflict sampled point generally comprise mod3 conflict sampled point, mod6 conflict sampled point and
Any one or more etc. in mod30 conflict sampled point.Mod3 conflict i.e. mod (PCI1,3)=mod (PCI2,3)；Mod6 rushes
Prominent i.e. mod (PCI1,6)=mod (PCI2,6)；Mod30 conflict i.e. mod (PCI1,30)=mod (PCI2,30).Oneth mod punching
Conflict with the 2nd mod conflict point type of sampled point of the conflict point type of prominent sampled point is the most identical, if i.e. acquisition first
Mod conflict sampled point is mod3 conflict sampled point, then same the 2nd mod conflict sampled point obtained also is sampled for mod3 conflict
Point.
Owing to mod3 conflict typically i.e. can be with accurate description road quality, it is possible to obtain mod3 punching in all sampled points
Prominent sampled point.In order to assess more accurately, it is also possible to obtain mod3 conflict sampled point and mod6 conflict sampling in all sampled points
Point, or obtain mod3 conflict sampled point in all sampled points, mod6 conflict sampled point and mod30 conflict sampled point simultaneously,
This is not made restriction by the present invention.
In one embodiment, a mod punching in all sampled points is obtained according to a described PCI and described 2nd PCI
The step of prominent sampled point may include that
Obtain in all sampled points mod for the first time according to a described PCI and described first time PCI to conflict sampled point；
Obtain second time mod in all sampled points according to a described PCI and described second time PCI to conflict sampled point.
In one embodiment, the 2nd mod punching in all sampled points is obtained according to described 3rd PCI and described 4th PCI
The step of prominent sampled point may include that
Obtain third time mod in all sampled points according to described 3rd PCI and described third time PCI to conflict sampled point；
Obtain the 4th mod in all sampled points according to described 3rd PCI and described 4th PCI to conflict sampled point.
In mod3 conflict and table 1 as a example by the PCI in strongest signal strength 3dB, due to Mod (137,3)=Mod (374,
3), the sampled point so the mod that sampled point 1 is 3dB conflicts.The method of the mod conflict sampled point obtaining 6dB is similar to, and refuses at this
Repeat.
In step S140, in one embodiment, according to the ratio of a described mod conflict sampled point with total sampled point
And the difference of the ratio of described 2nd mod conflict sampled point and described total sampled point, it is thus achieved that the step of mod conflict lifting ratio
May include that
Conflict with ratio and described third time mod of described total sampled point according to described first time mod conflict sampled point
The difference of the ratio of sampled point and described total sampled point, it is thus achieved that the lifting ratio of mod conflict for the first time；
Conflict with the ratio of described total sampled point and described 4th mod according to described second time mod conflict sampled point
The difference of the ratio of sampled point and described total sampled point, it is thus achieved that the lifting ratio of mod conflict for the second time.
In order to be more fully understood that mod conflict lifting ratio, promote ratio below in conjunction with mod3 conflict lifting ratio, mod6 conflict
The specific embodiment of example and mod30 conflict lifting ratio illustrates.
(1) mod3 conflict lifting ratio
The mod3 conflict lifting ratio of 3dB
Mod3 conflict ratio in mod3 conflict ratio-new 3dB in=former 3dB
The mod3 conflict lifting ratio of 6dB
Mod3 conflict ratio in mod3 conflict ratio-new 6dB in=former 6dB
(2) mod6 conflict lifting ratio
The mod6 conflict lifting ratio of 3dB
Mod6 conflict ratio in mod6 conflict ratio-new 3dB in=former 3dB
The mod6 conflict lifting ratio of 6dB
Mod6 conflict ratio in mod6 conflict ratio-new 6dB in=former 6dB
(3) mod30 conflict lifting ratio
The mod30 conflict lifting ratio of 3dB
Mod30 conflict ratio in mod30 conflict ratio-new 3dB in=former 3dB
The mod30 conflict lifting ratio of 6dB
Mod30 conflict ratio in mod30 conflict ratio-new 6dB in=former 6dB
In step S150, the PCI interference value lifting turning over PCI scheme can be obtained according to mode existing in prior art
Amplitude, i.e. according to expressions below acquisition PCI interference value lifting amplitude:
PCI interference total value is obtained by interference coefficient and co-frequency cell correlation coefficient based on MR data.
In step S160, assessment is turned over the quality of PCI scheme and is i.e. assessed and turn over whether PCI scheme can be implemented.When assessment, can
Whether meeting corresponding condition with detection mod conflict lifting ratio, PCI interference value promotes whether amplitude meets corresponding condition,
If be satisfied by, then illustrating that the PCI updated can implement, the optimization that i.e. can carry out turning over PCI promotes, and otherwise, needs region
Network carries out turning over PCI again and optimizes lifting after carrying out structure optimization.Due to needs comprehensive mod conflict lifting ratio and PCI interference value
Lifting amplitude is estimated, so the present invention i.e. considers road quality and taken into account again the whole network quality, the PCI scheme of turning over obtained is
The scheme that real meaning is first-class.
In view of in order to assess accuracy and scheme that by stages is implemented, in one embodiment, conflict according to described mod
Lifting ratio and described PCI interference value promote the good and bad step compared to the PCI before updating of the PCI after amplitude assessment updates can
To include:
Detect described first time mod conflict lifting ratio, described second time mod conflict lifting ratio and described PCI interference
Whether value lifting amplitude is satisfied by the pre-conditioned of correspondence；
If being satisfied by, it is determined that the PCI after renewal is better than the PCI, PCI before updating and optimizes and can implement, and otherwise determines renewal
After PCI be inferior to update before PCI, PCI optimize can not implement.
Assume arrange pre-conditioned as follows:
(1) mod3 conflict lifting ratio reaches more than the first preset ratio, and such as 15%；
(2) mod6 conflict lifting ratio reaches more than the second preset ratio, and such as 25%；
(3) mod30 conflict lifting ratio reaches more than the 3rd preset ratio, and such as 35%.
(4) the total interference value of PCI promotes amplitude more than the 4th preset ratio, and such as 20%.
If calculate is mod3 conflict lifting ratio, it is judged that mod3 conflict lifting ratio and the total interference value of PCI promote width
Whether degree meets respective condition.If calculate is mod3 conflict lifting ratio and mod6 conflict lifting ratio, it is judged that mod3
Conflict lifting ratio, mod6 conflict lifting ratio and the total interference value of PCI promote whether amplitude meets respective condition.If calculated
Be mod3 conflict lifting ratio, mod6 conflict lifting ratio and mod30 conflict lifting ratio, it is judged that mod3 conflict promote ratio
Example, mod6 conflict lifting ratio, mod30 conflict lifting ratio and the total interference value of PCI promote whether amplitude meets respective condition.
Other situation is similar to, example the most one by one.
In order to be better understood from above-mentioned evaluation condition, below to consider that mod3 conflict lifting ratio, mod6 conflict promote ratio
As a example by example, mod30 conflict lifting ratio and by stages (such as 3dB and 6dB), it is described in detail.
When judging whether turn over PCI scheme can implement, need to judge that following condition meets the most simultaneously:
The mod3 conflict lifting ratio of evaluation condition 1:3dB and the mod3 conflict lifting ratio of 6dB reach more than 15%；
The mod6 conflict lifting ratio of evaluation condition 2:3dB and the mod6 conflict lifting ratio of 6dB reach more than 25%；
The mod30 conflict lifting ratio of evaluation condition 3:3dB and the mod30 conflict lifting ratio of 6dB reach more than 35%；
The total interference value of evaluation condition 4:PCI promotes amplitude more than 20%.
If above four evaluation conditions meet, it is determined that the PCI after renewal is better than the PCI before updating, and this time is turned over simultaneously
PCI scheme can be implemented, and otherwise determines that the PCI after renewal is inferior to the PCI before updating, and this time is turned over PCI scheme and can not be implemented.
In order to be more fully understood that embodiments of the present invention, it is described in detail below in conjunction with a specific embodiment.
(1) before frequency 1 is carried out PCI renewal, in sampled point 1, according to frequency sweep data acquisition strongest signal strength pair
The PCI1 answered, whether the signal intensity of detection PCI1 is more than-110dBm, if it does, exist in obtaining strongest signal strength 3dB
PCI2 corresponding to the signal intensity of homogeneous-frequency adjacent-domain, and the signal intensity of the homogeneous-frequency adjacent-domain existed in strongest signal strength 6dB
Corresponding PCI3, otherwise gives up sampled point 1.Judging whether PCI1 and PCI2 exists mod3 conflict, if existing, sampled point 1 is
The mod3 conflict sampled point of 3dB.Judging whether PCI1 and PCI3 exists mod3 conflict, if existing, sampled point 1 is the mod3 of 6dB
Conflict sampled point.Judging whether PCI1 and PCI2 exists mod6 conflict, if existing, sampled point 1 is the mod6 conflict sampling of 3dB
Point.Judging whether PCI1 and PCI3 exists mod6 conflict, if existing, sampled point 1 is the mod6 conflict sampled point of 6dB.Judge
Whether PCI1 and PCI2 exists mod30 conflict, if existing, sampled point 1 is the mod30 conflict sampled point of 3dB.Judge PCI1 and
Whether PCI3 exists mod30 conflict, if existing, sampled point 1 is the mod30 conflict sampled point of 6dB.Sampled point 2, sampled point
3 ... be performed both by the operation being similar to, the sampled point until the mod obtained in all sampled points conflicts.
The process obtaining the mod conflict sampled point in all sampled points after frequency 1 is carried out PCI renewal updates with PCI
The process of the mod conflict sampled point in all sampled points of front acquisition is similar to, and does not repeats them here.
(2) the mod3 conflict ratio of the 3dB after updating with PCI before PCI updates is obtained respectively according to expressions below
Obtain the mod3 of 3dB according to expressions below to conflict lifting ratio, before former in formula is renewal, be newly more
After Xin:
The mod3 conflict lifting ratio of 3dB
Mod3 conflict ratio in mod3 conflict ratio-new 3dB in=former 3dB
(3) the mod3 conflict ratio of the 6dB before PCI updates is obtained according to expressions below
The mod3 conflict lifting ratio of 6dB is obtained according to expressions below
The mod3 conflict lifting ratio of 6dB
Mod3 conflict ratio in mod3 conflict ratio-new 6dB in=former 6dB
(4) the mod6 conflict ratio of the 3dB before updating according to expressions below acquisition PCI and after renewal
The mod6 conflict lifting ratio of 3dB is obtained according to expressions below
The mod6 conflict lifting ratio of 3dB
Mod6 conflict ratio in mod6 conflict ratio-new 3dB in=former 3dB
(5) the mod6 conflict ratio of the 6dB before updating according to expressions below acquisition PCI and after renewal
The mod6 conflict lifting ratio of 6dB is obtained according to expressions below
The mod6 conflict lifting ratio of 6dB
Mod6 conflict ratio in mod6 conflict ratio-new 6dB in=former 6dB
(6) the mod30 conflict ratio of the 3dB before updating according to expressions below acquisition PCI and after renewal
The mod30 conflict lifting ratio of 3dB is obtained according to expressions below
The mod30 conflict lifting ratio of 3dB
Mod30 conflict ratio in mod30 conflict ratio-new 3dB in=former 3dB
(7) the mod30 conflict ratio of the 6dB before updating according to expressions below acquisition PCI and after renewal
The mod30 conflict lifting ratio of 6dB is obtained according to expressions below
The mod30 conflict lifting ratio of 6dB
Mod30 conflict ratio in mod30 conflict ratio-new 6dB in=former 6dB
(8) judging that following condition meets the most simultaneously, as being satisfied by, then the PCI updated can implement, after otherwise updating
PCI can not implement.
The mod3 conflict lifting ratio of evaluation condition 1:3dB and the mod3 conflict lifting ratio of 6dB reach more than 15%；
The mod6 conflict lifting ratio of evaluation condition 2:3dB and the mod6 conflict lifting ratio of 6dB reach more than 25%；
The mod30 conflict lifting ratio of evaluation condition 3:3dB and the mod30 conflict lifting ratio of 6dB reach more than 35%；
The total interference value of evaluation condition 4:PCI promotes amplitude more than 20%.
Based on same inventive concept, the present invention also provides for the apparatus for evaluating of Physical Cell Identifier in a kind of LTE network, below
In conjunction with accompanying drawing, the detailed description of the invention of apparatus of the present invention is described in detail.
As in figure 2 it is shown, the apparatus for evaluating of Physical Cell Identifier in a kind of LTE network, including:
Data update front PCI acquisition module 110, before the PCI of certain frequency in frequency sweep data updates, obtain respectively
The secondary signal taking a PCI corresponding to the first strongest signal strength of frequency described in each sampled point and described frequency is strong
The difference of the 2nd PCI that degree is corresponding, described first strongest signal strength and described secondary signal intensity is in preset range；
PCI acquisition module 120 after data renewal, for, after the PCI renewal to frequency described in frequency sweep data, obtaining respectively
The 4th signal taking the 3rd PCI corresponding to the 3rd strongest signal strength of frequency described in each sampled point and described frequency is strong
The difference of the 4th PCI that degree is corresponding, described 3rd strongest signal strength and described 4th signal intensity is in described preset range；
Conflict sampled point obtains module 130, for obtaining all sampled points according to a described PCI and described 2nd PCI
In a mod conflict sampled point, obtain the 2nd mod conflict in all sampled points according to described 3rd PCI and described 4th PCI and adopt
Sampling point；
Conflict lifting ratio obtains module 140, for the ratio according to a described mod conflict sampled point with total sampled point
And the difference of the ratio of described 2nd mod conflict sampled point and described total sampled point, it is thus achieved that mod conflicts lifting ratio；
Interference value promotes amplitude and obtains module 150, and after updating according to MR data acquisition PCI, the PCI of described frequency does
Disturb value lifting amplitude；
PCI evaluation module 160, for promoting amplitude assessment according to described mod conflict lifting ratio and described PCI interference value
The PCI after the renewal quality compared to the PCI before updating.
In one embodiment, as it is shown on figure 3, the front PCI acquisition module 110 of data renewal includes:
First signal intensity determines unit 1101, in each sampled point, determines strong with the first peak signal respectively
The difference of degree is less than the first time signal intensity of the first predetermined threshold value, and with the difference of the first strongest signal strength less than second
The second time signal intensity of predetermined threshold value, described first predetermined threshold value is less than described second predetermined threshold value；
Oneth PCI acquiring unit 1102, for obtaining first time PCI corresponding to described first time signal intensity and described
Second time PCI that signal intensity is corresponding for the second time.
In one embodiment, as shown in Figure 4, after described data update, PCI acquisition module 120 may include that
Secondary signal strength determining unit 1201, in each sampled point, determines strong with the 3rd peak signal respectively
The difference of degree is less than the third time signal intensity of described first predetermined threshold value, and is less than with the difference of the 3rd strongest signal strength
4th signal intensity of described second predetermined threshold value；
2nd PCI acquiring unit 1202, for obtaining third time PCI corresponding to described third time signal intensity and described
The 4th PCI that 4th signal intensity is corresponding.
In one embodiment, as it is shown in figure 5, described conflict sampled point acquisition module 130 may include that
The sampled point of mod conflict for the first time obtains unit 1301, for obtaining with described first time PCI according to a described PCI
Obtain the sampled point of mod conflict for the first time in all sampled points；
The sampled point of mod conflict for the second time obtains unit 1302, for obtaining with described second time PCI according to a described PCI
Obtain second time mod conflict sampled point in all sampled points；
The sampled point of mod conflict for the third time obtains unit 1303, for obtaining with described third time PCI according to described 3rd PCI
Obtain third time mod conflict sampled point in all sampled points；
4th time mod conflict sampled point obtains unit 1304, for obtaining with described 4th PCI according to described 3rd PCI
Obtain the 4th mod conflict sampled point in all sampled points.
In one embodiment, as shown in Figure 6, described conflict lifting ratio acquisition module 140 may include that
The lifting ratio of mod conflict for the first time obtains unit 1401, for according to described first time mod conflict sampled point and institute
State the ratio of total sampled point and the difference of the ratio of described third time mod conflict sampled point and described total sampled point, it is thus achieved that the
Mod conflict lifting ratio；
The lifting ratio of mod conflict for the second time obtains unit 1402, for according to described second time mod conflict sampled point and institute
State the ratio of total sampled point and the difference of the ratio of described 4th mod conflict sampled point and described total sampled point, it is thus achieved that the
Secondary mod conflicts lifting ratio.
In one embodiment, as it is shown in fig. 7, described PCI evaluation module 160 may include that
Detector unit 1601, is used for detecting described first time mod conflict lifting ratio, the conflict lifting of described second time mod
Ratio and described PCI interference value promote whether amplitude is satisfied by the pre-conditioned of correspondence；
Judging unit 1602, for promoting ratio in described first time mod conflict lifting ratio, the conflict of described second time mod
Example and described PCI interference value promote amplitude when being satisfied by correspondence pre-conditioned, before determining that the PCI after renewal is better than updating
PCI, promotes at described first time mod conflict lifting ratio, described second time mod conflict lifting ratio and described PCI interference value
Any one in amplitude or multinomial when being unsatisfactory for correspondence pre-conditioned, determines that the PCI after renewal is inferior to the PCI before updating.
When the present invention and prior art are compared to each other, possess advantages below:
(1) accuracy and the integrity of MR sampling it are not entirely dependent on: the Data Source of present invention assessment is in sweeping of surveying
Frequency evidence, by turn over frequency (renewal) before and after PCI, be directly substituted into actual measurement frequency sweep data model (mod conflict lifting ratio public affairs
Formula), it is thus achieved that mod3 conflict lifting ratio and/or mod6 conflict lifting ratio and/or mod30 conflict lifting ratio, comprehensive mod3
Conflict lifting ratio, mod6 conflict lifting ratio, mod30 conflict lifting ratio and PCI interference value lifting amplitude are weighed and are turned over PCI
The quality of scheme, has broken away from accuracy and the problem of integrity of the MR sampling that places one's entire reliance upon in Traditional measurements scheme；
(2) reflection road network quality: the Data Source of present invention assessment is in the frequency sweep data of actual measurement, front by turning over frequency (renewal)
After PCI, be directly substituted into the frequency sweep data model (mod conflict lifting ratio formula) of actual measurement, it is thus achieved that mod3 conflicts lifting ratio
And/or mod6 conflict lifting ratio and/or mod30 conflict lifting ratio, comprehensive mod3 conflict lifting ratio, mod6 conflict lifting
Ratio, mod30 conflict lifting ratio and PCI interference value promote amplitude and weigh the quality turning over PCI scheme, obtain according to frequency sweep data
The mod conflict lifting ratio obtained directly embodies the quality of road network, when the quality of road network and the quality of the whole network all promote, could calculate
It it is a scheme packaged；
(3) there is universality: the Data Source of present invention assessment is in the frequency sweep data of actual measurement, before and after turning over frequency (renewal)
PCI, be directly substituted into the frequency sweep data model (mod conflict lifting ratio formula) of actual measurement, it is thus achieved that mod3 conflict lifting ratio and/
Or mod6 conflict lifting ratio and/or mod30 conflict lifting ratio, comprehensive mod3 conflict lifting ratio, mod6 conflict promote ratio
Example, mod30 conflict lifting ratio and PCI interference value promote amplitude and weigh the quality turning over PCI scheme, have unified lifting range value
Standard, there is universality.
Each technical characteristic of embodiment described above can combine arbitrarily, for making description succinct, not to above-mentioned reality
The all possible combination of each technical characteristic executed in example is all described, but, as long as the combination of these technical characteristics is not deposited
In contradiction, all it is considered to be the scope that this specification is recorded.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed, but also
Can not therefore be construed as limiting the scope of the patent.It should be pointed out that, come for those of ordinary skill in the art
Saying, without departing from the inventive concept of the premise, it is also possible to make some deformation and improvement, these broadly fall into the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. the appraisal procedure of Physical Cell Identifier in a LTE network, it is characterised in that include step:
Before the PCI of certain frequency updates in frequency sweep data, obtain described in each sampled point the first of frequency respectively the strongest
A PCI that signal intensity is corresponding and the 2nd PCI corresponding to the secondary signal intensity of described frequency, described first peak signal
The difference of intensity and described secondary signal intensity is in preset range；
After the PCI of frequency described in frequency sweep data is updated, obtain described in each sampled point the 3rd of frequency the respectively the strongest
The 3rd PCI that signal intensity is corresponding and the 4th PCI corresponding to the 4th signal intensity of described frequency, described 3rd peak signal
The difference of intensity and described 4th signal intensity is in described preset range；
Obtain a mod in all sampled points according to a described PCI and described 2nd PCI to conflict sampled point, according to described the
Three PCI and described 4th PCI obtain the 2nd mod conflict sampled point in all sampled points；
Conflict sampled point with described with the ratio of total sampled point and described 2nd mod according to a described mod conflict sampled point
The difference of the ratio of total sampled point, it is thus achieved that mod conflicts lifting ratio；
After updating according to MR data acquisition PCI, the PCI interference value of described frequency promotes amplitude；
Before PCI after updating according to described mod conflict lifting ratio and the lifting amplitude assessment of described PCI interference value is compared to updating
The quality of PCI.
The appraisal procedure of Physical Cell Identifier in LTE network the most according to claim 1, it is characterised in that
The step obtaining the 2nd PCI corresponding to the secondary signal intensity of frequency described in each sampled point respectively includes:
In each sampled point, determine the first time letter less than the first predetermined threshold value of the difference with the first strongest signal strength respectively
Number intensity, and with the difference of the first strongest signal strength less than the second time signal intensity of the second predetermined threshold value, described first
Predetermined threshold value is less than described second predetermined threshold value；
Obtain first time PCI corresponding to described first time signal intensity and second time corresponding to described second time signal intensity
PCI；
The step obtaining the 4th PCI corresponding to the 4th signal intensity of frequency described in each sampled point respectively includes:
In each sampled point, determine respectively with the difference of the 3rd strongest signal strength less than the 3rd of described first predetermined threshold value
Secondary signal intensity, and it is less than the 4th signal intensity of described second predetermined threshold value with the difference of the 3rd strongest signal strength；
Obtain third time PCI corresponding to described third time signal intensity and corresponding the 4th time of described 4th signal intensity
PCI。
The appraisal procedure of Physical Cell Identifier in LTE network the most according to claim 2, it is characterised in that
Obtain the step of a mod conflict sampled point in all sampled points according to a described PCI and described 2nd PCI to include:
Obtain in all sampled points mod for the first time according to a described PCI and described first time PCI to conflict sampled point；According to described
One PCI and described second time PCI obtain second time mod in all sampled points and conflict sampled point；
Obtain the step of the 2nd mod conflict sampled point in all sampled points according to described 3rd PCI and described 4th PCI to include:
Obtain third time mod in all sampled points according to described 3rd PCI and described third time PCI to conflict sampled point；According to described
Three PCI and described 4th PCI obtain the 4th mod in all sampled points and conflict sampled point.
The appraisal procedure of Physical Cell Identifier in LTE network the most according to claim 3, it is characterised in that according to described
Oneth mod conflict sampled point conflicts with the ratio of total sampled point and described 2nd mod the sampled point ratio with described total sampled point
The difference of value, it is thus achieved that the step of mod conflict lifting ratio includes:
Ratio according to described first time mod conflict sampled point and described total sampled point and described third time mod are conflicted sampling
The difference of point and the ratio of described total sampled point, it is thus achieved that the lifting ratio of mod conflict for the first time；
Conflict with the ratio of described total sampled point and described 4th mod sampling according to described second time mod conflict sampled point
The difference of point and the ratio of described total sampled point, it is thus achieved that the lifting ratio of mod conflict for the second time.
The appraisal procedure of Physical Cell Identifier in LTE network the most according to claim 4, it is characterised in that according to described
Mod conflict lifting ratio and described PCI interference value promote the quality compared to the PCI before updating of the PCI after amplitude assessment updates
Step include:
Detect described first time mod conflict lifting ratio, described second time mod conflict lifting ratio and described PCI interference value to carry
Whether the amplitude of liter is satisfied by the pre-conditioned of correspondence；
If being satisfied by, it is determined that the PCI after renewal is better than the PCI before updating, before otherwise determining that the PCI after renewal is inferior to update
PCI。
6., according to the appraisal procedure of Physical Cell Identifier in the LTE network described in claim 1 to 5 any one, its feature exists
In, described first strongest signal strength and described 3rd strongest signal strength are more than preset signal strength threshold value；Described mod conflicts
Sampled point includes any one or more in mod3 conflict sampled point, mod6 conflict sampled point and mod30 conflict sampled point.
7. the apparatus for evaluating of Physical Cell Identifier in a LTE network, it is characterised in that including:
Data update front PCI acquisition module, before the PCI of certain frequency in frequency sweep data updates, obtain each respectively
A PCI and the secondary signal intensity of described frequency that first strongest signal strength of frequency described in sampled point is corresponding are corresponding
The 2nd PCI, the difference of described first strongest signal strength and described secondary signal intensity is in preset range；
PCI acquisition module after data renewal, for, after the PCI renewal to frequency described in frequency sweep data, obtaining each respectively
The 3rd PCI and the 4th signal intensity of described frequency that 3rd strongest signal strength of frequency described in sampled point is corresponding are corresponding
The 4th PCI, the difference of described 3rd strongest signal strength and described 4th signal intensity is in described preset range；
Conflict sampled point obtains module, for according in a described PCI and the described 2nd PCI all sampled points of acquisition first
Mod conflicts sampled point, obtains the 2nd mod in all sampled points according to described 3rd PCI and described 4th PCI and conflicts sampled point；
Conflict lifting ratio obtains module, for according to a described mod conflict sampled point and the ratio of total sampled point and institute
State the difference of the ratio of the 2nd mod conflict sampled point and described total sampled point, it is thus achieved that mod conflicts lifting ratio；
Interference value promotes amplitude and obtains module, and after updating according to MR data acquisition PCI, the PCI interference value of described frequency promotes
Amplitude；
PCI evaluation module, after promoting amplitude assessment renewal according to described mod conflict lifting ratio and described PCI interference value
PCI compared to the quality of PCI before updating.
The apparatus for evaluating of Physical Cell Identifier in LTE network the most according to claim 7, it is characterised in that
Before data update, PCI acquisition module includes:
First signal intensity determines unit, in each sampled point, determines respectively and the difference of the first strongest signal strength
Less than the first time signal intensity of the first predetermined threshold value, and with the difference of the first strongest signal strength less than the second predetermined threshold value
Second time signal intensity, described first predetermined threshold value be less than described second predetermined threshold value；
Oneth PCI acquiring unit, for obtaining first time PCI corresponding to described first time signal intensity and described second time letter
Number second time PCI that intensity is corresponding；
After described data update, PCI acquisition module includes:
Secondary signal strength determining unit, in each sampled point, determines and the difference of the 3rd strongest signal strength respectively
Less than the third time signal intensity of described first predetermined threshold value, and with the difference of the 3rd strongest signal strength less than described second
4th signal intensity of predetermined threshold value；
2nd PCI acquiring unit, for obtaining third time PCI corresponding to described third time signal intensity and described 4th letter
Number the 4th PCI that intensity is corresponding.
The apparatus for evaluating of Physical Cell Identifier in LTE network the most according to claim 8, it is characterised in that described conflict
Sampled point obtains module and includes:
The sampled point of mod conflict for the first time obtains unit, for obtaining all adopting according to a described PCI and described first time PCI
The sampled point of mod conflict for the first time in sampling point；
The sampled point of mod conflict for the second time obtains unit, for obtaining all adopting according to a described PCI with described second time PCI
Second time mod conflict sampled point in sampling point；
The sampled point of mod conflict for the third time obtains unit, for obtaining all adopting according to described 3rd PCI with described third time PCI
Third time mod conflict sampled point in sampling point；
4th time mod conflict sampled point obtains unit, for obtaining all adopting according to described 3rd PCI with described 4th PCI
4th mod conflict sampled point in sampling point.
The apparatus for evaluating of Physical Cell Identifier in LTE network the most according to claim 9, it is characterised in that
Described conflict lifting ratio obtains module and includes:
The lifting ratio of mod conflict for the first time obtains unit, for according to described first time mod conflict sampled point and described total sampling
The difference of the ratio of the ratio of point and described third time mod conflict sampled point and described total sampled point, it is thus achieved that mod punching for the first time
Prominent lifting ratio；
The lifting ratio of mod conflict for the second time obtains unit, for according to described second time mod conflict sampled point and described total sampling
The ratio of point and the difference of the ratio of described 4th mod conflict sampled point and described total sampled point, it is thus achieved that mod punching for the second time
Prominent lifting ratio；
Described PCI evaluation module includes:
Detector unit, is used for detecting described first time mod conflict lifting ratio, described second time mod conflict lifting ratio and institute
State PCI interference value and promote whether amplitude is satisfied by the pre-conditioned of correspondence；
Judging unit, for conflicting lifting ratio, described second time mod conflict lifting ratio and described at described first time mod
PCI interference value promote amplitude be satisfied by correspondence pre-conditioned time, determine the PCI after renewal be better than update before PCI, described
Appointing in the lifting ratio of mod conflict for the first time, described second time mod conflict lifting ratio and described PCI interference value lifting amplitude
One or more be unsatisfactory for correspondence pre-conditioned time, determine the PCI after renewal be inferior to update before PCI.
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| CN103906078A (en) * | 2014-04-29 | 2014-07-02 | 阮民 | Relation matrix establishment system and method and PCI intelligent optimization system and method |
| WO2015082577A1 (en) * | 2013-12-04 | 2015-06-11 | Nokia Solutions And Networks Oy | Self-organized distributed assignment, optimization, and use of physical cell ids |
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| CN103906078A (en) * | 2014-04-29 | 2014-07-02 | 阮民 | Relation matrix establishment system and method and PCI intelligent optimization system and method |
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