CN108271166B - Coverage optimization method and device for communication network - Google Patents
Coverage optimization method and device for communication network Download PDFInfo
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- CN108271166B CN108271166B CN201611270737.0A CN201611270737A CN108271166B CN 108271166 B CN108271166 B CN 108271166B CN 201611270737 A CN201611270737 A CN 201611270737A CN 108271166 B CN108271166 B CN 108271166B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
The application discloses a method and a device for coverage optimization of a communication network. The method comprises the following steps: respectively counting the number of sampling points of the antenna signal received by the target cell under the conditions of the first equivalent distance and the second equivalent distance, and respectively recording the number as a first total amount and a second total amount; establishing a first relation model according to the first equivalent distance, the second equivalent distance, the first total amount and the second total amount; establishing a second relation model according to the first transmitting power, the second transmitting power, the first downward inclination angle, the second downward inclination angle, the first equivalent distance and the second equivalent distance; determining a relation model of the number of sampling points and the downward inclination angle according to the first relation model and the second relation model; adjusting a downtilt angle of a cell antenna based at least in part on the third correlation model. According to the embodiment of the application, the downtilt angle of the cell antenna is automatically calculated through a multi-dimensional transformation algorithm, the technical defect that only the experience of workers is used can be overcome, and meanwhile, the optimization efficiency is high.
Description
Technical Field
The present application relates to the field of wireless communications technologies, and in particular, to a coverage optimization method for a communication network and an apparatus thereof.
Background
In a 4G wireless communication network, the interference standard for the coverage areas of antenna signals of different cells is higher than that of 2G/3G, and when the number of base stations covering a certain area reaches 4 or more, the problem of modulo three interference exists, so that strict and reasonable control area coverage becomes the primary work in LTE optimization work.
Currently, LTE coverage control and optimization mainly screens areas with too far coverage by analyzing measurement data in test logs and measurement reports, and provides a downtilt adjustment scheme according to the experience of optimization workers to overcome the problem of modulo three interference due to too far coverage.
However, the method of giving the adjustment scheme of the down tilt angle only based on the experience of the optimization worker has the following problems: firstly, the problem of too far coverage in a road or an area cannot be solved at one time, and the problem needs to be repeatedly tested and found at one time; secondly, the scheme needs repeated adjustment and test, and has low efficiency and high cost; third, it is easy to cause the problem of network coverage, which solves the problem point, and may neglect the coverage problem of the peripheral area or the handover problem between adjacent cells.
In summary, there is a lack in the prior art of a coverage optimization method that is not based on the experience of optimization workers alone and can automatically provide an optimization plan.
Disclosure of Invention
The embodiment of the application provides a coverage optimization method and device for a communication network, which can solve the problem of over coverage in wireless communication only according to the experience of optimization personnel.
The coverage optimization method for the communication network provided by the embodiment of the application comprises the following steps:
respectively counting the number of sampling points of the antenna signal received by the target cell under the conditions of the first equivalent distance and the second equivalent distance, and respectively recording the number as a first total amount and a second total amount; the first equivalent distance is greater than the second equivalent distance, the downtilt angle of the cell antenna under the condition of the first equivalent distance is a first downtilt angle, the transmitting power of the cell antenna is a first transmitting power, the downtilt angle of the cell antenna under the condition of the second equivalent distance is a second downtilt angle, and the transmitting power of the cell antenna is a second transmitting power;
establishing a first relation model according to the first equivalent distance, the second equivalent distance, the first total amount and the second total amount; in the first relation model, the ratio of the first total amount to the second total amount is in direct proportion to the ratio of the first equivalent distance to the second equivalent distance;
establishing a second relation model according to the first transmitting power, the second transmitting power, the first downward inclination angle, the second downward inclination angle, the first equivalent distance and the second equivalent distance;
determining a relation model of the number of sampling points and the downward inclination angle according to the first relation model and the second relation model, and recording as a third relation model;
adjusting a downtilt angle of a cell antenna based at least in part on the third correlation model.
In one embodiment, establishing a second relationship model according to the first transmit power, the second transmit power, the first downtilt angle, the second downtilt angle, the first equivalent distance, and the second equivalent distance further includes:
judging whether the first transmitting power is the same as the second transmitting power;
if the first transmitting power is the same as the second transmitting power, establishing a second relation model according to the first downward inclination angle and the first equivalent distance;
otherwise, according to the second equivalent distance, a second downward inclination angle establishes the second relation model.
In one embodiment, the receiving the sampling point of the antenna signal of the target cell includes:
the sampling point of the target cell receiving the antenna signal is set, and the sampling point of the adjacent cell receiving the antenna signal is set.
In one embodiment, the method further comprises:
judging whether the number of the sampling points and the ratio of the first total amount to the second total amount meet preset requirements or not;
if not, counting the number of the sampling points, the first total amount and the second total amount again.
In one embodiment, the method further comprises:
judging whether the ratio of the first total amount to the second total amount supports the downward inclination angle of the cell antenna;
if the ratio of the first total amount to the second total amount is not to support the downtilt angle of the cell antenna, adjusting the first transmission power or the second transmission power until the ratio of the first total amount to the second total amount supports the downtilt angle of the cell antenna.
In one embodiment, the method further comprises:
judging whether a sampling point capable of receiving the antenna signal exists in an adjacent cell;
and if the cell antenna exists, adjusting the downward inclination angle of the cell antenna until no sampling point for receiving the antenna signal exists in the adjacent cell.
In one embodiment, the method further comprises:
acquiring measurement report MR sampling data, determining sampling point information according to the MR sampling data, and counting the first total amount and the second total amount according to the sampling point information.
According to the coverage optimization device of the communication network provided by the embodiment of the application, the coverage optimization device comprises:
the counting module is used for respectively counting the number of sampling points of the antenna signal received by the target cell under the conditions of the first equivalent distance and the second equivalent distance, and respectively recording the number of the sampling points as a first total amount and a second total amount; the first equivalent distance is greater than the second equivalent distance, the downtilt angle of the cell antenna under the condition of the first equivalent distance is a first downtilt angle, the transmitting power of the cell antenna is a first transmitting power, the downtilt angle of the cell antenna under the condition of the second equivalent distance is a second downtilt angle, and the transmitting power of the cell antenna is a second transmitting power;
the first relation model establishing module is used for establishing a first relation model according to the first equivalent distance, the second equivalent distance, the first total amount and the second total amount; in the first relation model, the ratio of the first total amount to the second total amount is in direct proportion to the ratio of the first equivalent distance to the second equivalent distance;
a second relation model establishing module, configured to establish a second relation model according to the first transmit power, the second transmit power, the first downtilt, the second downtilt, the first equivalent distance, and the second equivalent distance;
the third relation model establishing module is used for determining a relation model between the number of sampling points and the downward inclination angle according to the first relation model and the second relation model;
a downtilt determination module to adjust a downtilt of a cell antenna based at least in part on the third relational model.
In one embodiment, the second relationship model building module further comprises:
a first judging subunit, configured to judge whether the first transmit power is the same as the second transmit power;
the first modeling subunit is configured to, if the first transmit power is the same as the second transmit power, establish the second relationship model according to the first downtilt angle and the first equivalent distance;
and the second modeling subunit is configured to, if the first transmit power is different from the second transmit power, establish the second relationship model according to the second equivalent distance and the second downward inclination angle.
In one embodiment, in the statistical unit, the receiving a sampling point of an antenna signal of a target cell includes:
the sampling point of the target cell receiving the antenna signal is set, and the sampling point of the adjacent cell receiving the antenna signal is set.
In one embodiment, the apparatus further comprises:
the second judging module is used for judging whether the number of the sampling points and the ratio of the first total amount to the second total amount meet preset requirements or not;
and the first processing module is used for counting the number of the sampling points, the first total amount and the second total amount again if the number of the sampling points and the ratio of the first total amount to the second total amount do not meet the preset requirement.
In one embodiment, the apparatus further comprises:
a third judging module, configured to judge whether the ratio of the first total amount to the second total amount supports the optimized downward tilt angle;
a second processing module, configured to adjust the transmit power until the ratio of the first total amount to the second total amount supports the determined downtilt angle of the cell antenna, if the ratio of the first total amount to the second total amount does not support the optimized downtilt angle.
In one embodiment, the apparatus further comprises:
the fourth judging module is used for judging whether sampling points capable of receiving the antenna signals exist in adjacent cells or not;
and the third processing module is used for adjusting the optimized downward inclination angle if the adjacent cell has a sampling point capable of receiving the antenna signal until the adjacent cell does not have the sampling point capable of receiving the antenna signal.
In one embodiment, the apparatus further comprises:
and the data acquisition module is used for acquiring measurement report MR sampling data, determining sampling point information according to the MR sampling data, and counting the first total amount and the second total amount according to the sampling point information.
According to the coverage optimization method and device for the communication network, the first relation model and the second relation model are established, the relation model of the number of the sampling points and the downtilt angle is established according to the first relation model and the second relation model, the technical defect that the downtilt angle of the cell antenna is adjusted only by the experience of technicians can be overcome, meanwhile, the downtilt angle of the cell antenna is calculated through a multi-dimensional transformation algorithm, and optimization efficiency is high.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a flowchart of a coverage optimization method for a communication network according to an embodiment of the present application;
fig. 2 is a flowchart of another coverage optimization method for a communication network according to an embodiment of the present application;
fig. 3 is a schematic diagram of an equivalent distance, a downtilt angle and a cell coverage structure of a target cell;
fig. 4 is a schematic structural diagram of a coverage optimization apparatus of a communication network according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of another coverage optimization apparatus of a communication network according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Example 1
An embodiment of the present application provides a coverage optimization method for a communication network, which can be used to solve an over-coverage problem in a 4G communication network, and as shown in fig. 1, the method includes the following steps:
step S101, respectively counting the number of sampling points of the antenna signal of the target cell received under the conditions of the first equivalent distance and the second equivalent distance, and respectively recording the number as a first total amount and a second total amount; the first equivalent distance is greater than the second equivalent distance, the downtilt angle of the cell antenna under the condition of the first equivalent distance is a first downtilt angle, the transmitting power of the cell antenna is a first transmitting power, the downtilt angle of the cell antenna under the condition of the second equivalent distance is a second downtilt angle, and the transmitting power of the cell antenna is a second transmitting power;
step S103, establishing a first relation model according to the first equivalent distance, the second equivalent distance, the first total amount and the second total amount; in the first relation model, the ratio of the first total amount to the second total amount is in direct proportion to the ratio of the first equivalent distance to the second equivalent distance;
such as: the first total amount is Q1, the second total amount is Q2, the first equivalent distance is L1, and the second equivalent distance is L2, the first relationship model can be expressed as:
step S105, establishing a second relation model according to the first transmitting power, the second transmitting power, the first downward inclination angle, the second downward inclination angle, the first equivalent distance and the second equivalent distance;
the second relation model establishes the relation between the equivalent distance and the downtilt angle through the first equivalent distance and the first downtilt angle or through the second equivalent distance and the second downtilt angle.
S107, determining a relation model of the number of sampling points and the downward inclination angle according to the first relation model and the second relation model, and recording as a third relation model;
the first relation model represents the relation between the number of the sampling points and the equivalent distance, and the second relation model represents the relation between the equivalent distance and the downward inclination angle, so that the relation model between the number of the sampling points and the downward inclination angle can be determined according to the first relation model and the second relation model.
And S109, determining the downward inclination angle of the cell antenna according to the relation model of the number of the sampling points and the downward inclination angle.
The coverage optimization method of the communication network disclosed in the embodiment of the application comprises the steps of firstly establishing a relation model between the number of sampling points and the equivalent distance, recording the relation model as a first relation model, then establishing a relation model between the equivalent distance and the downtilt angle, recording the relation model as a second relation model, determining a relation model between the number of sampling points and the downtilt angle according to the first relation model and the second relation model, recording the relation model as a third relation model, and determining the downtilt angle of the cell antenna according to the determined relation model between the number of sampling points and the downtilt angle. The embodiment of the application overcomes the technical defect that the downtilt angle of the cell antenna is adjusted only by the experience of a technician, and meanwhile, the downtilt angle of the cell antenna is calculated through a multi-dimensional transformation algorithm, so that the optimization efficiency is high.
In one embodiment, step S105 further comprises the steps of:
judging whether the first transmitting power is the same as the second transmitting power;
if the first transmitting power is the same as the second transmitting power, establishing a second relation model according to the first downward inclination angle and the first equivalent distance;
such as: referring to fig. 2, the target cell is S, the antenna height of the target cell is H, the first equivalent distance is ld.s, the second equivalent distance is ld.s, LOW, and the first downtilt angle is θsA is the boundary point of the target cell, and the height of A is HAThen the second relationship model is:
Wherein, betasIs the valley angle of the cell antenna.
It can be seen that equation (one) has substantially the same meaning as equation (two), except that equation (two) is multiplied by sin (θ) simultaneously on both sides of the equal sign of equation (one)s-βs)。
If the first transmitting power is different from the second transmitting power, establishing a second relation model according to the second equivalent distance and the second downward inclination angle;
such as: in fig. 2, the target cell is S, the antenna height of the target cell is H, and the second equivalent distance is LD.S.LOWThe second down inclination angle is thetaD.S.LOWA is the boundary point of the target cell, and the height of A is HAThen the second relationship model is:
by combining the first relational model and the second relational model, a relational model (a third relational model) between the number of sampling points and the downward inclination angle can be obtained as follows:
wherein Q is1For the number of samples counted at the first equivalent distance, Q2The number of sampling points is counted under the condition of the second equivalent distance, K is a coefficient, and the ratio of the first total amount to the second total amount is represented and is in direct proportion to the ratio of the first equivalent distance to the second equivalent distance.
Referring to FIG. 2, Q1Can indicate the number of sampling points of the antenna signal of the target cell S acquired in the area AOS and the area AOF, and correspondingly, Q2The number of sampling points of the antenna signal of the target cell S acquired in the region COS and the region COE can be represented, and as can be seen from the figure, the first equivalent distance LD.SGreater than the second equivalent distance LD.S.LOW。
Before the second relation model is built, whether the first transmitting power is the same as the second transmitting power or not is judged, when the transmitting powers are the same, the first relation model is built by adopting the first equivalent distance and the first downward inclination angle, and when the first transmitting power is different from the second transmitting power, the second relation model is built by adopting the second equivalent distance and the second downward inclination angle, so that the building accuracy of the second relation model is improved.
In one embodiment, the sampling points at which the antenna signal of the target cell is received include a sampling point at which the antenna signal is received, which is provided in the target cell, and a sampling point at which the antenna signal is received, which is provided in an adjacent cell.
Such as: in fig. 2, the antenna height of the target cell S is H, the boundary point of the target cell S is a, a perpendicular line is drawn from point a to the ground plane, and the perpendicular line intersects with the ground plane at point O, so that the antenna signal can be obtained at the sampling point within the AOS range of the target cell, and the antenna signal of the target cell can also be obtained at the sampling point in the AOF, although the AOF belongs to the range of the cell adjacent to the target cell, the sampling point for obtaining the antenna signal of the target cell includes the sampling point in the AOS area and the sampling point in the area AOF, and the equivalent distance of the cell antenna can be reduced by the power reduction method under the condition that the downtilt angle of the cell antenna is not changed.
According to the coverage optimization method for the communication network, the antenna signal is acquired in the target cell, and meanwhile, the sampling point of the antenna signal of the target cell is acquired in the adjacent cell, so that the number of the measured sampling points of the antenna signal acquired in the target cell is more accurate, and the reliability is high.
In one embodiment, referring to fig. 3, the method further comprises:
step S102, judging whether the number of the sampling points and the ratio of the first total amount to the second total amount meet preset requirements or not;
if the number of the sampling points and the ratio of the first total amount to the second total amount satisfy the preset requirement, continuing to step S103; otherwise, re-executing the step S101, and counting the number of the sampling points, the first total amount and the second total amount again; the number of the sampling points and the ratio of the first total amount to the second total amount are judged, whether the number meets the preset requirement or not is judged, the effectiveness of the number of the sampling points and the ratio of the first total amount to the second total amount is effectively guaranteed, and the accuracy of determining the downtilt angle of the cell antenna according to the number of the sampling points is improved.
In one embodiment, the method further includes step S110 of verifying whether a ratio of the first total amount to the second total amount supports a downtilt angle of the cell antenna;
if the ratio of the first total amount to the second total amount does not support the downtilt angle of the cell antenna, step S111 is executed: adjusting the first transmitting power or the second transmitting power, executing step S101 again, continuing to count the first total amount and the second total amount until the ratio of the first total amount to the second total amount supports the downtilt angle of the cell antenna, and counting the number of sampling points, the first total amount and the second total amount again.
In one embodiment, the method for coverage optimization of a communication network further comprises:
step S112, judging whether sampling points capable of receiving the antenna signals exist in adjacent cells;
if yes, step S113 is executed to adjust the downtilt angle of the cell antenna until no sampling point capable of receiving the antenna signal exists in the adjacent cell.
In one embodiment, the method further comprises:
and S100, acquiring measurement report MR sampling data, determining sampling point information according to the MR sampling data, and counting the first total amount and the second total amount according to the sampling point information.
The MR (Measurement report) includes a sampling point for acquiring an antenna signal in a target cell and a sampling point for acquiring a cell antenna signal in a cell adjacent to the target cell; and respectively counting sampling points of the antenna signals of the target cell acquired in the two regions, wherein the sum of the sampling points of the antenna signals of the target cell acquired in the two regions forms the sampling point of the target cell.
Since the MR sampling data is a file in an Xml format, the MR sampling data in the Xml format is converted into a file in an excel format for subsequent use.
In one embodiment, the MR sampling data further includes attribute information of the target cell and performance parameters of an antenna of the target cell, where the attribute information includes a name and a unique identifier of the target cell, and is used to characterize the target area; the performance parameters comprise the transmitting power, the downtilt angle and the equivalent distance of the antenna, and are used as a first transmitting power, a first downtilt angle and a first equivalent distance; the performance parameter is also used as a second transmit power, a second downtilt angle, and a second equivalent distance.
The MR sampling data includes not only the names, unique identifiers, and other information of the two cells, but also names, unique identifiers, and other information of other areas adjacent to the target cell, which is not described herein again.
Example 2
Referring to fig. 4, an apparatus for coverage optimization of a communication network according to an embodiment of the present application includes a statistical module 201, a first relationship model building module 203, a second relationship model building module 205, a third relationship model building module 207, and a downward inclination determining module 209. The counting module 201 is configured to count the number of sampling points of the antenna signal received by the target cell under the first equivalent distance and the second equivalent distance, which are respectively recorded as a first total amount and a second total amount; a first relation model establishing module 203, configured to establish a first relation model according to the first equivalent distance, the second equivalent distance, the first total amount, and the second total amount; in the first relation model, the ratio of the first total amount to the second total amount is in direct proportion to the ratio of the first equivalent distance to the second equivalent distance; a second relation model establishing module 205, configured to establish a second relation model according to the first transmit power, the second transmit power, the first downtilt, the second downtilt, the first equivalent distance, and the second equivalent distance;
a third relationship model establishing module 207, configured to determine a relationship model between the number of sampling points and the downtilt angle according to the first relationship model and the second relationship model; and a down tilt determining module 209, configured to determine a down tilt of the cell antenna according to a relation model between the number of sampling points and the down tilt. The first equivalent distance is greater than the second equivalent distance, the downtilt angle of the cell antenna under the condition of the first equivalent distance is a first downtilt angle, the transmitting power of the cell antenna is a first transmitting power, the downtilt angle of the cell antenna under the condition of the second equivalent distance is a second downtilt angle, and the transmitting power of the cell antenna is a second transmitting power;
referring to FIG. 5, in one embodiment, the second relational model building module 205 further includes a first judging sub-unit 2051, a first modeling sub-unit 2052, and a second modeling sub-unit 2053. The first determining subunit 2051 is configured to determine whether the first transmit power is the same as the second transmit power; a first modeling subunit 2052, configured to, if the first transmit power is the same as the second transmit power, establish the second relationship model according to the first downtilt angle and the first equivalent distance; a second modeling subunit 2053, configured to, if the first transmit power is different from the second transmit power, establish the second relationship model according to the second equivalent distance and the second downward inclination angle.
In one embodiment, in the statistical unit 201, the receiving of the sampling point of the antenna signal of the target cell includes: setting a sampling point for receiving the antenna signal in a target cell and setting a sampling point for receiving the antenna signal in an adjacent cell; such as: in fig. 2, the sampling points at which the antenna signal of the target cell S is received include the sampling points of the target cell AOS and also include the sampling points at which the antenna signal of the target cell is received in the AOF in the adjacent cell. Because the adjacent cell has its own cell antenna, theoretically, the adjacent cell should not acquire the antenna signal of the target cell, but should acquire the antenna signal of the local adjacent cell, and therefore, the cross-zone coverage behavior of the antenna signal of the target cell is reflected to a certain extent by the sampling point of the antenna signal of the target cell acquired by the adjacent cell.
In one embodiment, the coverage optimization apparatus of a communication network further includes:
a second determining module 202, configured to determine whether the number of the sampling points and the ratio of the first total amount to the second total amount satisfy a preset requirement;
the first processing module 204 is configured to skip to the counting module again if the number of the sampling points and the ratio of the first total amount to the second total amount do not meet the preset requirement, and is configured to count the number of the sampling points, the first total amount, and the second total amount again.
In one embodiment, the coverage optimization apparatus of a communication network further includes:
a second determining module 210, configured to determine whether a ratio of the first total amount to the second total amount supports the optimized downward tilt angle;
a second processing module 211, configured to adjust the transmission power if the ratio of the first total amount to the second total amount does not support the optimized downtilt angle, skip to the statistics module, and count the first total amount and the second total amount again until the ratio of the first total amount to the second total amount supports the determined downtilt angle of the cell antenna.
In one embodiment, the coverage optimization apparatus of a communication network further includes:
a fourth determining module 212, configured to determine whether there is a sampling point that can receive the antenna signal in an adjacent cell;
a third processing module 213, configured to adjust the optimized downtilt angle if there are sampling points that can receive the antenna signal in the adjacent cell, until there are no sampling points that receive the antenna signal in the adjacent cell.
If the fourth determination module 212 determines that there is no sampling point capable of receiving the antenna sine signal in the adjacent cell, it indicates that the downtilt angle of the cell antenna obtained by the coverage optimization system of the communication network meets the requirement of optimization, and this optimization is finished.
In one embodiment, the coverage optimization apparatus of a communication network further includes:
the data acquisition module 200 is configured to acquire measurement report MR sampling data, determine sampling point information according to the MR sampling data, and count the first total amount and the second total amount according to the sampling point information.
The coverage optimization device for the communication network comprises a first relation model establishing module, a second relation model establishing module and a third relation model establishing module, wherein the third relation model establishing module obtains a third relation model according to a first relation model established by the first relation model establishing module and a second relation model established by the second relation model establishing module, determines the relation between the downward inclination angle and the number of sampling points and marks the relation as the third relation model, determines the downward inclination angle of a cell antenna according to the third relation model, and obtains the downward inclination angle of the cell antenna through a multi-dimensional transformation algorithm, so that the optimization efficiency is high.
It should be noted that the execution subjects of the steps of the method provided in embodiment 1 may be the same device, or different devices may be used as the execution subjects of the method. For example, the execution subject of step 201 and step 203 may be the same device, and the execution subject of step 205 may be another device; for another example, the execution subject of step 201 may be a device, and the execution subjects of step 203 and step 205 may be another device; and so on.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-readable program code embodied therein.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (12)
1. A method for coverage optimization in a communication network, comprising:
respectively counting the number of sampling points of the antenna signal received by the target cell under the conditions of the first equivalent distance and the second equivalent distance, and respectively recording the number as a first total amount and a second total amount; the first equivalent distance is greater than the second equivalent distance, the downtilt angle of the cell antenna under the condition of the first equivalent distance is a first downtilt angle, the transmitting power of the cell antenna is a first transmitting power, the downtilt angle of the cell antenna under the condition of the second equivalent distance is a second downtilt angle, and the transmitting power of the cell antenna is a second transmitting power;
establishing a first relation model according to the first equivalent distance, the second equivalent distance, the first total amount and the second total amount; in the first relation model, the ratio of the first total amount to the second total amount is in direct proportion to the ratio of the first equivalent distance to the second equivalent distance;
establishing a second relation model according to the first transmitting power, the second transmitting power, the first downward inclination angle, the second downward inclination angle, the first equivalent distance and the second equivalent distance;
determining a relation model of the number of sampling points and the downward inclination angle according to the first relation model and the second relation model, and recording as a third relation model;
adjusting a downtilt angle of a cell antenna based at least in part on the third relational model;
establishing a second relation model according to the first transmitting power, the second transmitting power, the first downward inclination angle, the second downward inclination angle, the first equivalent distance and the second equivalent distance, wherein the establishing of the second relation model comprises the following steps:
judging whether the first transmitting power is the same as the second transmitting power;
if the first transmitting power is the same as the second transmitting power, establishing a second relation model according to the first downward inclination angle and the first equivalent distance;
otherwise, establishing the second relation model by a second downward inclination angle according to the second equivalent distance;
the third relationship model is as follows:
wherein Q is1The number of sampling points, Q, counted under the first equivalent distance2The number of sampling points counted under the condition of the second equivalent distance is represented by K which is a coefficient, the ratio of the first total amount to the second total amount is represented and is in direct proportion to the ratio of the first equivalent distance to the second equivalent distance, and L isD.SIs the first equivalent distance, θD.S.LOWAt a second down-tilt angle, betasIs the valley angle of the cell antenna, H is the antenna height of the target cell, HAIs the height of the boundary point of the target cell.
2. The method of claim 1, wherein receiving the sample point of the antenna signal of the target cell comprises:
the sampling point of the target cell receiving the antenna signal is set, and the sampling point of the adjacent cell receiving the antenna signal is set.
3. The method of claim 1, further comprising:
judging whether the number of the sampling points and the ratio of the first total amount to the second total amount are higher than a preset first threshold value or not;
and if the ratio is not higher than the first threshold, counting the number of sampling points, the first total amount and the second total amount again.
4. The method of claim 1, further comprising:
calculating the percentage of the first total amount and the second total amount in the total sampling amount, and respectively recording the percentage as a first percentage and a second percentage;
if the first duty cycle is less than the second duty cycle, adjusting the first transmit power or the second transmit power until the first duty cycle is greater than the second duty cycle.
5. The method of claim 2, further comprising:
judging whether a sampling point capable of receiving the antenna signal exists in an adjacent cell;
and if the cell antenna exists, adjusting the downward inclination angle of the cell antenna until no sampling point for receiving the antenna signal exists in the adjacent cell.
6. The method of claim 1, further comprising:
acquiring measurement report MR sampling data, determining sampling point information according to the MR sampling data, and counting the first total amount and the second total amount according to the sampling point information.
7. An apparatus for coverage optimization in a communication network, comprising:
the counting module is used for respectively counting the number of sampling points of the antenna signal received by the target cell under the conditions of the first equivalent distance and the second equivalent distance, and respectively recording the number of the sampling points as a first total amount and a second total amount; the first equivalent distance is greater than the second equivalent distance, the downtilt angle of the cell antenna under the condition of the first equivalent distance is a first downtilt angle, the transmitting power of the cell antenna is a first transmitting power, the downtilt angle of the cell antenna under the condition of the second equivalent distance is a second downtilt angle, and the transmitting power of the cell antenna is a second transmitting power;
the first relation model establishing module is used for establishing a first relation model according to the first equivalent distance, the second equivalent distance, the first total amount and the second total amount; in the first relation model, the ratio of the first total amount to the second total amount is in direct proportion to the ratio of the first equivalent distance to the second equivalent distance;
a second relation model establishing module, configured to establish a second relation model according to the first transmit power, the second transmit power, the first downtilt, the second downtilt, the first equivalent distance, and the second equivalent distance;
the third relation model establishing module is used for determining a relation model between the number of sampling points and the downward inclination angle according to the first relation model and the second relation model and recording the relation model as a third relation model;
a downtilt determination module to adjust a downtilt of a cell antenna in accordance with a determination based at least in part on the third relational model;
the second relationship model building module comprises:
a first judging subunit, configured to judge whether the first transmit power is the same as the second transmit power;
a first modeling subunit, configured to establish the first relation model according to the first downtilt angle and the first equivalent distance if the first transmit power is the same as the second transmit power;
a second modeling subunit, configured to, if the first transmit power is different from the second transmit power, establish the first relationship model according to the second equivalent distance and the second downward inclination angle;
the third relationship model is as follows:
wherein Q is1The number of sampling points, Q, counted under the first equivalent distance2The number of sampling points counted under the condition of the second equivalent distance is represented by K which is a coefficient, the ratio of the first total amount to the second total amount is represented and is in direct proportion to the ratio of the first equivalent distance to the second equivalent distance, and L isD.SIs the first equivalent distance, θD.S.LOWAt a second down-tilt angle, betasIs the valley angle of the cell antenna, H is the antenna height of the target cell, HAIs the height of the boundary point of the target cell.
8. The apparatus of claim 7, wherein the statistical module receives a sample point of the antenna signal of the target cell, and comprises:
the sampling point of the target cell receiving the antenna signal is set, and the sampling point of the adjacent cell receiving the antenna signal is set.
9. The apparatus of claim 7, further comprising:
the second judging module is used for judging whether the number of the sampling points and the ratio of the first total amount to the second total amount meet preset requirements or not;
and the first processing module is used for counting the number of the sampling points, the first total amount and the second total amount again if the number of the sampling points and the ratio of the first total amount to the second total amount do not meet the preset requirement.
10. The apparatus of claim 7, further comprising:
the third judging module is used for judging whether the ratio of the first total amount to the second total amount supports the optimized downward inclination angle or not;
a second processing module, configured to adjust the transmit power until the ratio of the first total amount to the second total amount supports the determined downtilt angle of the cell antenna, if the ratio of the first total amount to the second total amount does not support the optimized downtilt angle.
11. The apparatus of claim 10, further comprising:
the fourth judging module is used for judging whether sampling points capable of receiving the antenna signals exist in adjacent cells or not;
and the third processing module is used for adjusting the optimized downward inclination angle if the adjacent cell has a sampling point capable of receiving the antenna signal until the adjacent cell does not have the sampling point capable of receiving the antenna signal.
12. The apparatus of claim 7, further comprising:
and the data acquisition module is used for acquiring measurement report MR sampling data, determining sampling point information according to the MR sampling data, and counting the first total amount and the second total amount according to the sampling point information.
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