CN106211186B - The method of cell problem is determined in a kind of wireless network planning - Google Patents
The method of cell problem is determined in a kind of wireless network planning Download PDFInfo
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- CN106211186B CN106211186B CN201510222281.XA CN201510222281A CN106211186B CN 106211186 B CN106211186 B CN 106211186B CN 201510222281 A CN201510222281 A CN 201510222281A CN 106211186 B CN106211186 B CN 106211186B
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Abstract
This application discloses a kind of methods that cell problem is determined in wireless network planning, and the overlapping coverage coefficient and weak coverage coefficient of each cell are determined according to Reference Signal Received Power (RSRP) result of simulation data；According to the relationship between the coefficient and pre-set high-low threshold value, there is weak covering problem and overlapping covering problem simultaneously to a cell, it or is to adjust this cell or adjustment interfered cell when there is overlapping covering problem, the standard for determining cell problem is given, and gives the method for adjustment cell.
Description
Technical field
This application involves the sides that cell problem is determined in mobile communication technology field more particularly to a kind of wireless network planning
Method.
Background technique
In the development of mechanics of communication, the reliability of wireless transmission is the important indicator of measurement system quality.Wirelessly passing
In defeated, i.e., the weak covering problem of cell is avoided, interference problem caused by avoiding the overlapping of cell to cover again.Especially in network
In planning, how to configure system parameter is optimal network, and the judgement to cell problem is exactly a wherein vital step.
Only to cell the problem of, has carried out accurate judgement, could be that direction is found in the adjustment of its parameter and optimization, can just make whole network
It is optimal.
In the prior art, when the weak covering of cell, then expand its coverage area；When the covering of small area overlapping, then want
Reduce its coverage area.But in actual network planning conceptual design, a cell is all often can have weak cover simultaneously
Lid and overlapping covering problem；Cell with overlapping covering problem can also be by adjusting this cell or two kinds of interfered cell of adjustment
Mode improves.Under both of these case, how this determines the adjustment direction of cell, currently without suitable solution.
Summary of the invention
This application provides a kind of methods that cell problem is determined in wireless network planning, give simple and easy judgement
The standard of cell problem and the method for adjusting cell.
The embodiment of the present application provides a kind of method that cell problem is determined in wireless network planning, comprising:
The overlapping coverage coefficient and weak coverage coefficient of each cell are determined according to the RSRP result of simulation data；It is described weak to cover
Lid coefficient is that whole sampling number purpose ratios, weak covering sampled point are in the number and the cell of weak covering sampled point in cell
Its corresponding RSRP is less than the sampled point of the weak covering decision threshold of cell of setting；The overlapping coverage coefficient is to be overlapped in cell
Whole sampling number purpose ratios in the number of Covering samples and the cell, overlapping Covering samples are greater than for adjacent area interference strength to be set
The overlapping of fixed adjacent area interference strength threshold value covers sampled point, and the overlapping covering sampled point is corresponding overlapping coverage cell
Number is greater than the sampled point of the overlapping coverage cell number thresholding of setting；
Appoint the cell taken in plot planning, referred to as cell i；
If the weak coverage coefficient of cell i is greater than high weak coverage threshold, cell i is judged as cell to be expanded；
If the weak coverage coefficient of cell i is less than low coverage threshold, the overlapping coverage coefficient of cell i is further judged at this time
With the relationship of high Chong Die coverage coefficient thresholding and low overlapping coverage coefficient thresholding: if the overlapping coverage coefficient of cell i is greater than Gao Chong
Folded coverage coefficient thresholding is overlapped between coverage coefficient thresholding and low overlapping coverage threshold in height, is carried out cell i and is expanded still
The judgement that interfered cell reduces；If the overlapping coverage coefficient of cell i is less than low overlapping coverage coefficient thresholding, cell i is determined as
Non-problems cell；
If the weak coverage coefficient of cell i is between high weak coverage threshold and low coverage threshold, further judgement at this time
The relationship of the overlapping coverage coefficient of cell i and high Chong Die coverage coefficient thresholding and low overlapping coverage coefficient thresholding: the overlapping of cell i
Coverage coefficient is greater than high overlapping coverage coefficient thresholding, carries out the expansion of this cell i or interfered cell reduces judgement；If cell i
It is overlapped coverage coefficient and is less than low overlapping coverage coefficient thresholding, cell i is determined as cell to be expanded；The overlapping of cell i covers system
Number carries out this cell i and expands or reduce judgement between height overlapping coverage coefficient thresholding and low overlapping coverage threshold.
Preferably, described this cell i of progress expands or interfered cell reduces to adjudicate and includes:
It is descending in the sampled point ratio impacted to this cell i in the overlapping coverage cell for influencing this cell i
It is ranked up, selects the maximum cell j of sampled point ratio impacted to this cell i；
Judge whether the sampled point ratio of cell j impacted to this cell i is greater than ratio threshold value w, if it is not, determining
Cell i is cell to be expanded；
If so, further judging whether the weak coverage coefficient of cell j is greater than high weak coverage threshold, if so, determining cell i
For cell to be expanded, otherwise it is judged to cell j to be zoomed out cell.
Preferably, described cell i expands or diminution judgement includes:
In being disturbed in cell using this cell i as overlapping coverage cell, by the impacted sampled point for being disturbed cell
Ratio is descending to be ranked up to being disturbed cell；Select that impacted sampled point ratio is maximum to be disturbed cell；
Judge whether the ratio is greater than ratio threshold value w, if it is not, determining that this cell i is cell to be expanded；
If so, whether the weak coverage coefficient that further judgement is disturbed cell is greater than high weak coverage threshold, if so, incite somebody to action this
Cell i is determined as cell to be expanded, and is otherwise judged to this cell to be zoomed out cell i.
Preferably, further comprising after expanding cell when this cell is determined as: being covered using this cell as overlapping
Cell is disturbed in cell, is influenced to be overlapped cell of the Covering samples ratio greater than ratio threshold value w by this cell, is all determined as
Cell to be expanded.
As can be seen from the above technical solutions, by calculating overlapping coverage coefficient and weak coverage coefficient, by these coefficients with
The threshold value of pre-set difference menace level is compared, to have weak covering problem and overlapping to cover simultaneously a cell
Lid problem, or having when being overlapped covering problem is to adjust this cell or adjustment interfered cell, gives and determines cell problem
Standard, and give the method for adjustment cell.
Detailed description of the invention
Fig. 1 is the method flow schematic diagram that cell problem is determined in wireless network planning provided by the embodiments of the present application；
Fig. 2 is progress cell i expansion provided by the embodiments of the present application or the determination flow schematic diagram that interfered cell reduces；
Fig. 3 is the judgement flow diagram that this cell i of progress provided by the embodiments of the present application expands or reduces.
Specific embodiment
To keep the technical principle, feature and technical effect of technical scheme clearer, below in conjunction with specific reality
Example is applied technical scheme is described in detail.
The method of cell problem is determined in wireless network planning provided by the embodiments of the present application as shown in Figure 1, including as follows
Step:
Step 101: configuration base station basic parameter carries out MPS process emulation.The parameter includes base station power, antenna side
To angle, Downtilt etc., simulation result is Reference Signal Received Power (RSRP).
Step 102: the overlapping coverage coefficient and weak coverage coefficient of each cell are determined according to the RSRP result of simulation data.
Wherein, weak coverage coefficient calculation method is as follows:
By the corresponding RSRP of each sampled point in any one described cell and the weak covering decision threshold of the cell of setting into
Row compares, and filters out the sampled point of corresponding RSRP covering decision threshold weak less than the cell as weak covering sampled point；It will
Whole sampling number purpose ratios are as weak coverage coefficient in the number and any one described cell of weak covering sampled point.
Such as: the setting weak covering decision threshold -100dB of cell, then RSRP is small with this less than the sampled point number of -100dB
The number ratio of area's whole sampled point is the weak coverage coefficient of the cell.
It is as follows to be overlapped coverage coefficient calculation method:
According to the corresponding RSRP of each of any one cell sampled point, each sampled point pair is calculated separately out
The overlapping coverage cell number and adjacent area interference strength answered.
The weight that corresponding overlapping coverage cell number is greater than setting is filtered out in the sampled point in any one described cell
The sampled point of superimposition lid number of cells thresholding covers sampled point as overlapping, it is determined as meeting point A；And sampled point is covered in overlapping
In filter out corresponding adjacent area interference strength be greater than setting adjacent area interference strength threshold value overlapping covering sampled point, i.e. RSRP
Difference is less than the RSRP difference threshold of setting, as overlapping Covering samples, it is determined as set B；
It is overlapped whole sampled points in the number (i.e. the number of sampled point in set B) and any one described cell of Covering samples
The ratio of number is the overlapping coverage coefficient of any one cell.
Such as: by taking the sampled point P in any one cell as an example, calculate separately the main serving cell and each adjacent cell of P
RSRP difference obtains the adjacent cell number of RSRP difference (such as 10dB) within the set range, along with the main serving cell is P
Point corresponding overlapping coverage cell number.If the overlapping coverage cell number (e.g., 7) of P is greater than the overlapping coverage cell of setting
Number thresholding (e.g., 6), then P attaches most importance to superimposition lid sampled point, belongs to set A.
This is accumulated as to the RSRP difference of the corresponding each adjacent cell of each sampled point and main serving cell in set A to adopt
The adjacent area interference strength of sampling point, adjacent area interference strength are greater than the sampled point of the adjacent area interference strength threshold value of setting, i.e. RSRP is poor
Value is less than the RSRP difference threshold of setting, and folded Covering samples of attaching most importance to belong to set B.Set B belongs to set A.
Step 103: the high weak coverage threshold of setting, low coverage threshold, height overlapping coverage threshold, low overlapping coverage threshold.
Herein according to the physical planning demand of different regions, acceptable threshold value is set.Such as wealthy family is limited to 80%, low threshold is
20%.The application is not construed as limiting this.
Step 104: the problem of according to the weak coverage coefficient of each cell and being overlapped coverage coefficient, determine each cell.
Appoint the cell taken in plot planning, referred to as cell i:
If the weak coverage coefficient of cell i is greater than high weak coverage threshold, cell i is judged as cell to be expanded.
Because weak coverage coefficient and overlapping coverage coefficient can be improved simultaneously when cell enlargement, so working as the weak of cell i
When coverage coefficient is greater than high weak coverage threshold, regardless of coverage coefficient is overlapped, cell i is all judged as cell to be expanded.
If the weak coverage coefficient of cell i is less than low coverage threshold, the overlapping coverage coefficient of cell i is further judged at this time
The relationship of coverage coefficient thresholding Chong Die with height and low overlapping coverage coefficient thresholding,
If the overlapping coverage coefficient of cell i is greater than high overlapping coverage coefficient thresholding, cell i expansion or interfered cell are carried out
The judgement of diminution: as shown in Fig. 2, including the following steps:
Step 201: in the overlapping coverage cell for influencing this cell i, in the sampled point ratio impacted to this cell i
It is descending to be ranked up；.
Step 202: selecting influences the maximum cell j of this cell i sampled point ratio.
Step 203: judging whether cell j is greater than ratio threshold value w to the sampled point ratio that this cell i impacts, such as
Fruit is to enter step 204, otherwise determines that cell i is cell to be expanded；The ratio threshold value w is covered according to interference and overlapping
Acceptable degree setting.
Step 204: judge whether cell j is high weak coverage cell (whether weak coverage coefficient is greater than high weak coverage threshold),
If so, determining that cell i is cell to be expanded, otherwise it is judged to cell j to be zoomed out cell.
If the overlapping coverage coefficient of cell i is less than low overlapping coverage coefficient thresholding.Cell i is determined as non-problems cell.
If the overlapping coverage coefficient of cell i carries out this between height overlapping coverage coefficient thresholding and low overlapping coverage threshold
Cell i expands or interfered cell reduces judgement, and determination flow is as shown in Figure 2.
If the weak coverage coefficient of cell i is between high weak coverage threshold and low coverage threshold, further judgement at this time
The relationship of the overlapping coverage coefficient of cell i and high Chong Die coverage coefficient thresholding and low overlapping coverage coefficient thresholding:
The overlapping coverage coefficient of cell i is greater than high overlapping coverage coefficient thresholding, carries out the expansion of this cell i or interfered cell
Reduce judgement；Determination flow is as shown in Figure 2.
The overlapping coverage coefficient of cell i is less than low overlapping coverage coefficient thresholding, and cell i is determined as cell to be expanded；
It is small to carry out this between height overlapping coverage coefficient thresholding and low overlapping coverage threshold for the overlapping coverage coefficient of cell i
Area i expands or reduces judgement, and the process is as shown in Figure 3.
The embodiment of the present application, which gives, carries out the detailed process that this cell i expands or reduces judgement, as shown in figure 3, packet
Include following steps:
Step 301: being disturbed in cell using this cell as overlapping coverage cell, by being disturbed the impacted of cell
Sampled point ratio is descending to be ranked up to being disturbed cell；
Step 302: selecting is influenced that sampled point ratio is maximum to be disturbed cell by this cell；
Step 303: judging whether the ratio is greater than ratio threshold value w, if so, entering step 304, otherwise determine that this is small
Area is cell to be expanded；
Step 304: judgement is disturbed whether cell is that (whether weak coverage coefficient is greater than high weak covering door for high weak coverage cell
Limit), if so, this cell is determined as cell to be expanded, this cell otherwise is judged to being zoomed out cell
It is determined as when expanding cell when this cell, being disturbed cell using this cell as overlapping coverage cell
In, it is influenced to be overlapped cell of Covering samples (in the set B) ratio greater than ratio threshold value w by this cell, be all determined as wait expand
Cell.
Each cell is traversed according to the above aspect, the judgement until completing all cells.
The foregoing is merely the preferred embodiments of the application, not to limit the protection scope of the application, it is all
Within the spirit and principle of technical scheme, any modification, equivalent substitution, improvement and etc. done should be included in this Shen
Within the scope of please protecting.
Claims (4)
1. determining the method for cell problem in a kind of wireless network planning characterized by comprising
According to the Reference Signal Received Power RSRP result of simulation data determine each cell overlapping coverage coefficient and weak covering
Coefficient；The weak coverage coefficient is the number of weak covering sampled point and sampling number purpose ratios whole in the cell in cell,
Weak covering sampled point is the sampled point for the weak covering decision threshold of cell that its corresponding RSRP is less than setting；Overlapping covering system
Number is that whole sampling number purpose ratios in the number and the cell of Covering samples are overlapped in cell, and overlapping Covering samples are adjacent area
The overlapping that interference strength is greater than the adjacent area interference strength threshold value of setting covers sampled point, and the overlapping covering sampled point is to correspond to
Overlapping coverage cell number be greater than setting overlapping coverage cell number thresholding sampled point；In the overlapping covering sampled point
The adjacent area interference strength of each sampled point is the tired of the RSRP difference of the corresponding each adjacent cell of the sampled point and main serving cell
It is value added；
Appoint the cell taken in plot planning, referred to as cell i；
If the weak coverage coefficient of cell i is greater than high weak coverage threshold, cell i is judged as cell to be expanded；
If the weak coverage coefficient of cell i is less than low coverage threshold, the overlapping coverage coefficient and height of cell i are further judged at this time
The relationship of overlapping coverage coefficient thresholding and low overlapping coverage coefficient thresholding: if the overlapping coverage coefficient of cell i is greater than high overlapping and covers
Lid coefficient thresholding is overlapped between coverage coefficient thresholding and low overlapping coverage threshold in height, is carried out cell i and is expanded or interfere
The judgement of cell reduction；If the overlapping coverage coefficient of cell i is less than low overlapping coverage coefficient thresholding, cell i is determined as non-ask
Inscribe cell；
If the weak coverage coefficient of cell i is between high weak coverage threshold and low coverage threshold, cell i is further judged at this time
Overlapping coverage coefficient and high Chong Die coverage coefficient thresholding and the low relationship for being overlapped coverage coefficient thresholding: the overlapping covering of cell i
Coefficient is greater than high overlapping coverage coefficient thresholding, carries out the expansion of this cell i or interfered cell reduces judgement；If the overlapping of cell i
Coverage coefficient is less than low overlapping coverage coefficient thresholding, and cell i is determined as cell to be expanded；The overlapping coverage coefficient of cell i exists
Between height overlapping coverage coefficient thresholding and low overlapping coverage threshold, carries out this cell i and expand or reduce judgement.
2. the method according to claim 1, wherein described this cell i of progress expands or interfered cell reduces
Judgement includes:
In the overlapping coverage cell for influencing this cell i, in the descending progress of the sampled point ratio impacted to this cell i
Sequence, selects the maximum cell j of sampled point ratio impacted to this cell i；
Judge whether the sampled point ratio of cell j impacted to this cell i is greater than ratio threshold value w, if it is not, determining cell
I is cell to be expanded；
If so, further judge whether the weak coverage coefficient of cell j is greater than high weak coverage threshold, if so, determine cell i for
Expand cell, otherwise is judged to cell j to be zoomed out cell.
3. the method according to claim 1, wherein described cell i expands or diminution judgement includes:
In being disturbed in cell using this cell i as overlapping coverage cell, in the impacted sampled point ratio for being disturbed cell
It is descending to be ranked up to being disturbed cell；Select that impacted sampled point ratio is maximum to be disturbed cell；
Judge whether the ratio is greater than ratio threshold value w, if it is not, determining that this cell i is cell to be expanded；
If so, whether the weak coverage coefficient that further judgement is disturbed cell is greater than high weak coverage threshold, if so, by this cell
I is determined as cell to be expanded, and is otherwise judged to this cell to be zoomed out cell i.
4. method according to any one of claims 1 to 3, which is characterized in that when this cell is determined as cell to be expanded
Afterwards, further comprise: being disturbed in cell using this cell as overlapping coverage cell, being influenced overlapping covering sample by this cell
This ratio is greater than the cell of ratio threshold value w, is all determined as cell to be expanded.
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| CN108271176B (en) * | 2016-12-30 | 2021-05-04 | 中国移动通信集团福建有限公司 | Method and system for determining base station cell quality difference root cause |
| CN108307394B (en) * | 2017-01-11 | 2020-05-01 | 普天信息技术有限公司 | Method and system for positioning abnormal cell in wireless network planning simulation |
| CN109982334A (en) * | 2017-12-28 | 2019-07-05 | 中国移动通信集团四川有限公司 | Optimization method, device, equipment and the medium of antenna-feed parameter |
| CN109996239B (en) * | 2017-12-29 | 2022-06-03 | 中国移动通信集团设计院有限公司 | Method and device for optimizing and analyzing LTE (Long term evolution) network structure |
| CN109639496A (en) * | 2018-12-21 | 2019-04-16 | 中国联合网络通信集团有限公司 | A kind of localization method and device in radio network problems region |
| CN116325983A (en) * | 2020-07-24 | 2023-06-23 | 华为技术有限公司 | Antenna positioning method of first base station and communication device |
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| US9037142B2 (en) * | 2012-07-30 | 2015-05-19 | Tektronix, Inc. | Cell planning method for wireless communication systems |
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