CN104010320B - Determine the method and apparatus of wireless network coverage rate - Google Patents

Abstract

Embodiments of the present invention provide a method and device for determining wireless network coverage. The method is as follows: for a network coverage evaluation area divided into several grids, obtain the wireless network parameter simulation values corresponding to each grid obtained in advance through coverage simulation simulation; determine the scene to which each grid belongs; according to the set According to the corresponding relationship between scenes and coverage weights and the determined scenes to which each grid belongs, determine the coverage weights corresponding to each grid; among each grid, determine each grid whose wireless network coverage meets the coverage requirements; The coverage weights corresponding to the respective grids, and according to the ratio of the sum of the coverage weights of the grids whose wireless network coverage meets the coverage requirements to the sum of the coverage weights of all grids in the network coverage evaluation area, determine the network coverage evaluation area. Wi-Fi coverage. By adopting the method, the purpose of improving the accuracy of wireless network coverage obtained by using the coverage simulation method can be achieved.

Description

Method and device for determining wireless network coverage

The application of the present invention is a divisional application of the invention application with the filing date of April 21, 2011, the application number of 201110100504.7, and the invention title of "Method and Equipment for Determining Wireless Network Coverage".

technical field

The invention relates to the field of mobile communication, in particular to a method and equipment for determining wireless network coverage.

Background technique

Wireless network coverage evaluation is an important work content in the process of wireless network coverage planning and coverage optimization, and is the most basic work to ensure wireless network performance. Accurate wireless network coverage evaluation results can accurately guide wireless network coverage planning or coverage optimization, and improve wireless network performance. On the contrary, wireless network coverage evaluation results with large deviations will cause coverage planning or coverage optimization results to be contrary to actual expectations. Can not achieve the effect of improving wireless network performance.

At present, TD-SCDMA wireless network coverage evaluation is carried out according to the wireless network coverage rate, and there are mainly two methods as follows:

The first method is to use the road test method, that is, use the road test equipment to simulate the user call on the road, measure the wireless network related information corresponding to each measurement point and record the measurement results, and judge the wireless network coverage at each measurement point on the road Whether the call requirements are met, by calculating the coverage of the wireless network on the road (the ratio of the number of measurement points whose wireless network coverage meets the call requirements to the number of all measurement points on the road), the wireless network coverage on the road is evaluated. Evaluate.

The disadvantage of TD-SCDMA wireless network coverage evaluation by road test method is that because this method cannot simulate user calls on area targets (such as residential areas, colleges and commercial areas, etc.), the road test method cannot determine the coverage of area targets. In fact, a large number of users generate services on the surface target, and it is very necessary to count the wireless network coverage rate on the surface target, so it can only be obtained by the road test method for specific scenarios (roads) The wireless network coverage rate is one-sided and inaccurate, which leads to one-sided and inaccurate wireless network evaluation results. The wireless network coverage planning or coverage optimization based on the wireless network coverage evaluation results obtained by the road test method cannot be achieved. Improve wireless network performance requirements.

The second method is to use the coverage simulation method to divide the area that needs to be evaluated for wireless network coverage (network coverage evaluation area) into multiple sub-areas, and calculate the power of each sub-area in the network coverage evaluation area according to network engineering parameters and propagation models. To balance the interference value, compare the level with the interference value to determine whether the wireless network coverage in the sub-area can meet the call requirements, and calculate the coverage rate of the wireless network in the network coverage evaluation area (the sub-area where the wireless network coverage meets the call requirements The ratio of the number of sub-areas to the number of all sub-areas in the network coverage evaluation area), to realize the evaluation of the coverage of the wireless network in the network coverage evaluation area.

As shown in Figure 1, the wireless network coverage evaluation using the coverage simulation method specifically includes the following steps:

Step 101: Divide the network coverage assessment area into multiple grids (sub-areas) according to a certain scale, for example, 5m*5m, so as to facilitate subsequent wireless network coverage analysis on each grid.

Step 102, calculate the main common control physical channel field strength (PCCPCH_RSCP, Primary Common Control Physical Channel Received Signal Code Power) of each grid and main common control physical channel carrier-to-interference ratio (PCCPCH_C/I, Primary Common Control Physical Channel Carrier-to -Interference ratio).

Step 103, compare the PCCPCH RSCP and PCCPCH C/I of each grid with the predetermined threshold respectively, and obtain PCCPCH RSCP>RSCP_THRESHOLD (preset PCCPCH_RSCP threshold), and the PCCPCH C/I>C/ When I_THRESHOLD (the preset PCCPCH_C/I threshold), it is determined that the wireless network coverage in the grid meets the call requirement; otherwise, it is determined that the wireless network coverage in the grid does not meet the call requirement.

Step 104, calculate the wireless network coverage rate according to "wireless network coverage rate=(wireless network coverage meets the grid number of call requirements/network coverage evaluation area all grid numbers) * 100%", according to the wireless network coverage rate The wireless network coverage in the network coverage evaluation area is evaluated, and the higher the wireless network coverage, the better the wireless network coverage evaluation result in the network coverage evaluation area.

The disadvantages of using the coverage simulation method for TD-SCDMA wireless network coverage evaluation are:

1. The accuracy of the parameters used for wireless network coverage evaluation obtained by the coverage simulation method is low. Therefore, the wireless network coverage rate determined by using this parameter is inaccurate, and the wireless network coverage evaluation result is also necessarily inaccurate. , performing wireless network coverage planning or coverage optimization according to the wireless network coverage evaluation result will fail to meet the requirement of improving wireless network performance.

2. The distribution of services (users) in different scenarios is not fully considered. During the coverage evaluation process of the entire network coverage evaluation area, there are low-traffic scenarios where there are no or a small number of users talking (this scenario corresponds to at least one divided grid), Such as water surface, wetland, etc., have the same coverage requirements and importance as high-traffic scenarios with many users, such as residential areas and commercial areas. In fact, in low-traffic scenarios, due to the Relatively few, the coverage requirements of the wireless network should obviously be lower than the coverage requirements of the wireless network in the high-traffic scenario, that is, the wireless network coverage should first meet the wireless network coverage requirements of the high-traffic scenario, and because no matter whether the low-traffic scenario is in Under wireless network coverage, it will not have a great impact on users, and the importance of wireless network coverage evaluation should be lower than that of high-traffic scenarios, that is, wireless networks that meet high-traffic scenarios The importance of coverage is higher than that of wireless network coverage for low-traffic scenarios. In the existing process of determining wireless network coverage, setting the wireless network coverage requirements of low traffic scenarios and high traffic scenarios and the importance of wireless network coverage evaluation to be the same will make the determined wireless network coverage The result is inaccurate, which leads to network coverage planning or coverage optimization based on the evaluation results in the later stage of wireless network coverage. In order to meet the coverage of low-traffic scenarios, the coverage of high-traffic scenarios will be sacrificed, which cannot meet the requirements of improving network performance.

Wireless network coverage is the basis of wireless network coverage evaluation. The higher the decision-making accuracy of wireless network coverage is, the higher the accuracy of wireless network coverage evaluation results determined according to wireless network coverage is. Therefore, in order to improve the accuracy of wireless network coverage evaluation Accuracy, it is very necessary to introduce a solution that can improve the decision-making accuracy of wireless network coverage.

Contents of the invention

Embodiments of the present invention provide a method and device for determining wireless network coverage, which are used to solve the problem that the results of wireless network coverage obtained in the prior art are one-sided and inaccurate, resulting in inaccurate evaluation results of wireless network coverage.

A method of determining wireless network coverage, the method comprising:

For the network coverage evaluation area divided into several grids, obtain the wireless network parameter measurement values corresponding to each measurement point measured in advance by using the road test method, and obtain the wireless network parameters corresponding to each grid simulated in advance by using the coverage simulation method. Network parameter simulation value;

Identify each grid on which a measurement point falls;

For each determined grid, select the wireless network parameter measurement values corresponding to the measurement points included in the grid from the obtained wireless network parameter measurement values; and

Using the selected measured value to replace the obtained wireless network parameter simulation value corresponding to the grid;

The wireless network coverage rate of the network coverage evaluation area is determined by using each grid of the simulated values that are replaced and each grid of the simulated values that are not replaced.

A device for determining coverage of a wireless network, the device comprising:

The measurement result determination module is used to obtain the wireless network parameter measurement value corresponding to each measurement point measured in advance by using the road test method for the network coverage evaluation area divided into several grids;

The simulation value determination module is used to obtain the wireless network parameter simulation value corresponding to each grid obtained by simulation in advance using the coverage simulation method for the network coverage evaluation area divided into several grids;

A comprehensive module for determining each grid on which a measuring point falls;

The parameter measurement result determining module is used for selecting the wireless network parameter measurement values corresponding to the measurement points included in the grid from the obtained wireless network parameter measurement values for each determined grid;

A replacement module, configured to use the selected measured value to replace the obtained simulated value of the wireless network parameter corresponding to the grid;

The coverage determination module is configured to determine the wireless network coverage of the network coverage evaluation area by using each grid of the simulated values that are replaced and each grid of the simulated values that are not replaced.

A method for determining coverage of a wireless network, the method comprising:

Aiming at the network coverage assessment area divided into several grids, obtaining simulation values of wireless network parameters corresponding to each grid previously simulated by means of coverage simulation;

Determine the scene to which each grid belongs;

According to the corresponding relationship between the set scene and the coverage weight and the determined scene to which each grid belongs, determine the corresponding coverage weight of each grid;

In each grid, determine each grid whose wireless network coverage meets the coverage requirements;

According to the determined coverage weights corresponding to each grid, according to the ratio of the sum of the coverage weights of the grids whose wireless network coverage meets the coverage requirements to the sum of the coverage weights of all the grids in the network coverage evaluation area, determine the Network coverage evaluates the wireless network coverage of the area.

A device for determining coverage of a wireless network, the device comprising:

The simulation value determination module is used for obtaining the wireless network parameter simulation value corresponding to each grid that is simulated in advance by using the coverage simulation method for the network coverage evaluation area that is divided into several grids;

A grid scene determination module, configured to determine the scene to which each grid belongs;

The weight determination module is used to determine the coverage weights corresponding to each grid according to the corresponding relationship between the set scene and the coverage weight and the determined scene to which each grid belongs;

The coverage judging module is used to determine, in each grid, that the wireless network coverage meets the coverage requirements of each grid;

The ratio determination module is used to determine the coverage weights corresponding to each grid, according to the coverage weight sum of each grid that meets the coverage requirement according to the wireless network coverage and the sum of the coverage weights of all grids in the network coverage evaluation area to determine the wireless network coverage in the network coverage evaluation area.

The solution provided by the embodiment of the present invention effectively combines the road test method with the coverage simulation method, and replaces a part of the wireless network parameters obtained by the coverage simulation method with the wireless network parameter measurement results obtained by the road test method on the grid with measurement points simulated values, and use the simulated values of wireless network parameters after replacement and the simulated values of wireless network parameters that have not been replaced to determine the wireless network coverage rate of the network coverage evaluation area, so that by using the wireless network parameter measurement results with higher accuracy Replacing the simulated values of wireless network parameters with low accuracy improves the accuracy of the wireless network coverage obtained by the coverage simulation method to a certain extent. Accurate question; or, according to the importance of each scene in the network coverage evaluation area to the wireless network coverage evaluation, set the coverage weight for each scene, determine the corresponding coverage weight of the grid according to the scene to which the grid belongs, and determine the coverage weight Wireless network coverage, thereby improving the accuracy of wireless network coverage obtained by using the coverage simulation method.

Description of drawings

Fig. 1 is a flow chart of the steps of wireless network coverage assessment using a coverage simulation method in the prior art;

FIG. 2 is a flowchart of steps of a method for determining wireless network coverage provided by Embodiment 1 of the present invention;

FIG. 3 is a flowchart of steps of a method for determining wireless network coverage provided by Embodiment 2 of the present invention;

FIG. 4(a) is a schematic structural diagram of a device for determining wireless network coverage provided by Embodiment 3 of the present invention;

FIG. 4(b) is a schematic structural diagram of a device for determining wireless network coverage provided by Embodiment 3 of the present invention;

FIG. 4(c) is a schematic structural diagram of a device for determining wireless network coverage provided by Embodiment 3 of the present invention;

FIG. 4(d) is a schematic structural diagram of a device for determining wireless network coverage provided by Embodiment 3 of the present invention;

FIG. 5 is a flowchart of steps of a method for determining wireless network coverage provided by Embodiment 4 of the present invention;

FIG. 6 is a schematic structural diagram of a device for determining wireless network coverage provided by Embodiment 5 of the present invention.

Detailed ways

To solve the problem of low accuracy of wireless network coverage obtained in the prior art, in the solution provided by the embodiment of the present invention, the wireless network coverage evaluation area is divided into multiple grids, and the wireless network coverage of each grid is determined according to the wireless network coverage of each grid. The wireless network coverage of the entire wireless network coverage evaluation area, and involves the following three ways to improve the accuracy of the determined wireless network coverage:

The first one is to combine the road test method with the coverage simulation method, use the measurement results of the wireless network parameters with higher accuracy to replace some of the simulated values of the wireless network parameters with lower accuracy, and combine the wireless network parameter values with higher accuracy. Determine the wireless network coverage, and improve the accuracy of the determined wireless network coverage.

The second is to set the coverage weight for each scene according to the importance of each scene in the network coverage evaluation area to the wireless network coverage evaluation. For example, for the scene with a relatively small number of users and business, no matter whether the scene is covered by the wireless network or not Therefore, this scenario has little impact on the evaluation of wireless network coverage. A relatively small coverage weight can be set for this scenario, and a relatively large number of users and business data can be set for the scenario. The scene sets a relatively large coverage weight to reflect the impact of different scenarios on the network coverage evaluation. When determining the coverage of the wireless network, the corresponding coverage weight of the grid is determined according to the scene to which the grid belongs. Combined with the coverage weight to determine the wireless network coverage, thereby improving the accuracy of the determined wireless network coverage.

The coverage weight refers to the weight value set for the scene according to the importance of each scene to the wireless network coverage evaluation. The weight value is a relative value, that is, the coverage weight of the first scene is set to 5, and the second scene The coverage weight of 2 is the same as setting the coverage weight of the first scene to 10 and the coverage weight of the second scene to 4, which means that the importance of the first scene to the evaluation of wireless network coverage is 2.5 times that of the second scene .

The third method is to set the threshold value for the wireless network parameters corresponding to the scene according to the wireless network coverage requirements of the scene. Set a lower threshold value for the wireless network parameters corresponding to the scene, and set a higher threshold value for the wireless network parameters corresponding to the scene with a large number of users and services. When determining the wireless network coverage later, According to the scene to which the grid belongs, judge whether the wireless network parameters corresponding to the grid reach the set threshold value to determine whether the wireless network coverage in the grid meets the requirements, so that the grid can be judged according to the needs of different scenarios (grids). Whether the wireless network coverage in the scene (in the grid) meets the requirements, so as to achieve the purpose of improving the accuracy of the determined wireless network coverage.

In the solution of the present invention, at least one of the three manners may be used to improve the accuracy of the determined wireless network coverage.

The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and various embodiments.

Embodiment one,

Embodiment 1 of the present invention provides a method for determining the coverage of a wireless network. The step flow of the method is shown in FIG. 2 , and specifically includes the following steps:

Step 201, determine the measurement result and simulation value.

In this step, for the network coverage evaluation area divided into several grids, the measurement results of wireless network parameters corresponding to each measurement point obtained in advance by using the road test method, and the measurement results of the wireless network parameters corresponding to each measurement point obtained by using the coverage simulation method in advance can be obtained. The simulated value of the wireless network parameter corresponding to the cell. Specifically, the measurement result and the simulated value can be determined by performing a road test and a coverage simulation operation respectively.

The wireless network parameters may be PCCPCH_RSCP and PCCPCH_C/I.

Step 202, determine each grid on which a measurement point falls.

In this step, the measurement points obtained by using the road test method can be divided into the grids where the measurement points belong, so as to determine each grid on which the measurement points fall, that is, to determine the grids located on the road.

In this step, it is possible to mistakenly divide a measurement point on the edge of grid A (on the road) into grid B (not on the road) that does not actually contain the measurement point, which will cause subsequent errors The measurement results of the measurement points divided into the B grid replace the simulated values corresponding to the B grid that does not actually contain the measurement points. Therefore, preferably, it can be determined in this step that there are measurement points and the measurement points in the grid The number of points is greater than the set threshold for each grid, so that the probability that the determined grid is located on the road is increased, thereby reducing the subsequent replacement of the simulation value corresponding to the grid that is not located on the road with the measurement results of the measurement points located on the road The problem.

Step 203, for each wireless network parameter, obtain the wireless network parameter measurement result corresponding to the measurement point.

After the measurement points obtained from the road test are rasterized, the corresponding relationship between the grid and the measurement points can be established, and the wireless network parameters of the measurement points corresponding to the grid can be determined for each wireless network parameter corresponding to the grid. Network parameter measurement results.

Step 204: Replace the simulated value of the wireless network parameter corresponding to the grid with the obtained measurement result.

In this step, there are many ways to use the measurement result obtained in step 203 to replace the simulated value of the wireless network parameter corresponding to the grid, for example, use the largest measurement result among the obtained measurement results to replace the The simulation value of the wireless network parameter corresponding to the grid is replaced by the smallest measurement result among the obtained measurement results, or the simulation value of the wireless network parameter corresponding to the grid is determined from the measurement result by other methods. A measurement result is used to replace the simulation value of the wireless network parameter corresponding to the grid, and preferably, in order to make the measurement result used to replace the simulation value better and more comprehensively reflect the wireless network corresponding to the grid As an attribute of the parameter, the simulated value of the wireless network parameter corresponding to the grid may be replaced by the obtained average value of the measurement result.

Step 205, determine wireless network coverage.

In this step, the wireless network coverage rate of the network coverage evaluation area is determined by using the simulated values of the wireless network parameters after being replaced and the simulated values of the wireless network parameters not being replaced.

Specifically, according to the wireless network parameter threshold value uniformly set for each grid, determine the grid whose simulated value (replaced or not replaced) of the corresponding wireless network parameter is greater than the set threshold value, In order to determine the grids whose wireless network coverage meets the coverage requirements, and use the ratio of the number of grids whose wireless network coverage meets the coverage requirements to the number of all grids in the network coverage evaluation area to determine the wireless network coverage of the network coverage evaluation area .

In steps 201 to 205, the accuracy of the determined wireless network coverage is improved by replacing a part of the simulated values of the wireless network parameters with lower accuracy with the measurement results of the wireless network parameters with higher accuracy, and at the same time, further use The average value of the wireless network parameter measurement results is used to replace the wireless network parameter simulation value, so that the measurement results used to replace the simulation value can better and more comprehensively reflect the attributes of the wireless network parameters corresponding to the grid, and further improve the determined The purpose of the accuracy of wireless network coverage.

In addition to the method of determining wireless network coverage by combining wireless network parameters with high precision, it is also possible to further improve the determined wireless network coverage by setting corresponding coverage weights for each scene in the wireless network coverage evaluation area purpose of accuracy.

Step 205 specifically includes:

Step 2051, determine the scene to which each grid belongs.

To determine the scene to which the grid belongs is to determine the scene in which the grid is located. A scene can be understood as a communication area defined according to geographical features or other methods. The method of determining the scene to which each grid belongs may be different if the scene is defined in different ways. In each embodiment of the present invention, the defined scene is described as a road and various scenes in the electronic map as examples.

In this step, the scene to which the grid whose simulation value is replaced may be determined as a road, and the scene to which each grid whose simulation value is not replaced may be determined according to the scene information on the electronic map.

According to the scene information on the electronic map, determine the scene to which each grid whose simulation value has not been replaced belongs, specifically including:

Determine the position of the grid on the electronic map according to the longitude and latitude information of the grid. According to the scene information set on the electronic map, if the position of the grid covers a scene, the scene covered by the position of the grid is the scene The scene to which the grid belongs, otherwise, if the location of the grid covers multiple scenes, the scene with the largest area among the scenes covered by the grid is determined as the scene to which the grid belongs.

When there are multiple scenes with the largest area in the scenes covered by the grid, the scene with the largest area in the scenes covered by the grid can be determined as the scene to which the grid belongs, but not limited to the following two ways:

The first one is to arbitrarily select one of the scenes with the largest area as the scene to which the grid belongs.

The second type is to select a scene that is the same as one (or more) adjacent grids from the multiple scenes with the largest area as the scene to which the grid belongs.

Step 2052, determine the coverage weight of the grid.

If the grid is in a certain scene, the importance of the grid to wireless network coverage evaluation is the same as that of the scene, that is, the coverage weight of the grid is the same as that of the scene to which the grid belongs. Therefore, according to the corresponding relationship between the set scene and the coverage weight and the scene to which the grid belongs, the coverage weight corresponding to the grid can be determined.

Step 2053, determine whether the network coverage of the grid meets the coverage requirement.

When the simulated values of the wireless network parameters corresponding to the grid are greater than the set threshold value, it is determined that the wireless network coverage of the grid meets the coverage requirement; otherwise, it is determined that the wireless network coverage of the grid does not meet the coverage requirement.

Step 2054, determine wireless network coverage.

The wireless network coverage rate of the network coverage evaluation area is determined by using the ratio of the sum of the coverage weights of the grids whose wireless network coverage meets the coverage requirements to the sum of the coverage weights of all grids in the network coverage evaluation area.

On the basis of subdividing step 205 into steps 2051-2054 and determining the network coverage rate in combination with the coverage weight, it can also go a step further and set the threshold of wireless network parameters for the scene according to the different scenarios in the wireless network coverage evaluation area value, to further improve the accuracy of the determined wireless network coverage.

Preferably, after step 2051 and before step 2053, step 205 also includes step 2052':

Step 2052', determine the threshold values corresponding to each wireless network parameter in the grid.

If the grid is in a certain scene, the requirement of the grid for wireless network coverage is the same as that of the scene, that is, the threshold value of each wireless network parameter corresponding to the grid is the wireless network set corresponding to the scene to which the grid belongs. The threshold value of the parameter. Therefore, this step specifically includes: according to the corresponding relationship between the set scene and the threshold value of the wireless network parameter and the scene to which the grid belongs, determining the respective thresholds corresponding to the wireless network parameters in the grid.

At this time, for each grid, when the wireless network parameter simulation value corresponding to the grid is greater than the wireless network parameter threshold value corresponding to the grid, it is determined that the wireless network coverage of the grid meets the coverage requirements; The wireless network coverage of the grid does not meet the coverage requirements.

This step 2052' is not limited to being executed after step 2052 and before step 2053 as shown in FIG. 2 , but may also be executed after step 2051 and before step 2052.

In the solution provided by Embodiment 1, it is not necessary to set corresponding coverage weights for each scene, but on the basis of the method of determining wireless network coverage in combination with high-precision wireless network parameters, according to the wireless network coverage evaluation area Depending on the scene, set the threshold value of the wireless network parameter according to the scene. When determining the coverage of the wireless network, according to the scene to which the grid belongs, judge whether the wireless network parameter corresponding to the grid reaches the threshold value corresponding to the grid. Determine whether the wireless network coverage in the grid meets the requirements, and use the ratio of the number of grids whose wireless network coverage meets the coverage requirements to the number of all grids in the network coverage evaluation area to determine the wireless network coverage of the network coverage evaluation area rate, so as to further improve the accuracy of the determined wireless network coverage.

Of course, according to the different scenarios in the wireless network coverage evaluation area, the threshold value of the wireless network parameter is set for the scenario, so as to determine whether the wireless network parameter corresponding to the grid reaches the set threshold value according to the scenario to which the grid belongs. Whether the wireless network coverage in the grid meets the requirements and the method for determining the wireless network coverage can also be used alone to improve the accuracy of the determined wireless network coverage.

The solution provided by Embodiment 1 of the present invention can not only improve the accuracy of the determined wireless network coverage, but also overcome the one-sided problem of using the road test method to determine the wireless network coverage, so that the determined wireless network coverage can More comprehensively reflect the wireless network coverage of the network coverage evaluation area, and by setting different coverage weights and thresholds for the grids in different scenarios, the determined wireless network coverage can better reflect the network coverage evaluation area wireless network coverage needs.

Through a specific example, the wireless network parameters used to determine the coverage of the wireless network are PCCPCH_RSCP and PCCPCH_C/I, and at the same time, the three methods of improving the coverage of the wireless network provided by the present invention are used as an example to describe the first embodiment of the present invention. plan in detail.

Embodiment two,

Embodiment 2 of the present invention provides a method for determining the coverage of a wireless network. The step flow of the method is shown in FIG. 3 , and specifically includes the following steps:

Step 301. Obtain the PCCPCH_RSCP and PCCPCH_C/I previously obtained by using the road test method, and the PCCPCH_RSCP and PCCPCH_C/I obtained by using the coverage simulation method in advance.

Obtain the PCCPCH_RSCP and PCCPCH_C/I obtained in advance by the road test method, use the drive test equipment to simulate the user call on the road, and measure and record the corresponding PCCPCH_RSCP and PCCPCH_C/I of each measurement point.

When obtaining PCCPCH_RSCP and PCCPCH_C/I obtained in advance by using the coverage simulation method:

First, the network coverage evaluation area can be divided into square grids according to the accuracy of the electronic map. For example, if the accuracy of the electronic map is 5 meters, the minimum scale of the divided grids can be obtained as 5 meters*5 meters.

Then, PCCPCH_RSCP and PCCPCH_C/I can be determined according to the network engineering parameters and the propagation model. Specifically, the wireless network parameters corresponding to each grid can be calculated according to the following formula in combination with the antenna model:

PCCPCH_RSCP = PCCPCH transmit power + broadcast antenna gain + other gain - propagation loss - building wear loss - human body loss - cable loss - shadow fading value.

PCCPCH_C/I=(the strongest PCCCPH_RSCP in this grid)/(the sum of PCCPCH_RSCPs of other cells with the same frequency in this grid).

Step 302, performing rasterization processing on the measurement points obtained by the road test method.

When the measurement points obtained by the road test method are gridded, the grid division method is the same as the grid division method when the simulation value is determined by the coverage simulation method in step 301, so that the grid obtained after division is the same as The grid obtained after division is the same when determining the simulation value.

Step 303, determine each grid on which the measuring point falls.

Preferably, in this step, the grid whose number of measurement points in the grid is greater than 5 (set value) can be used as the determined grid.

Step 304, using the average value of the measurement results to replace the simulated value corresponding to the grid.

After determining a grid containing at least 5 measurement points, for each determined grid, the average value of the measurement results of each measurement point in the grid can be used to replace the simulation value corresponding to the grid, specifically, The average value of the measurement results can be determined by the following formula:

Among them, PCCPCH _RSCP and PCCPCH _C/I respectively represent the average values of PCCPCH_RSCP and PCCPCH_C/I measurement results corresponding to each measurement point falling in a certain grid, and PCCPCH_RSCP(i) and PCCPCH_C/I(i) respectively represent PCCPCH_RSCP and PCCPCH_C/I measurement results corresponding to the i-th measurement point in the grid, k is the number of measurement points falling in the grid.

Step 305, determine the scene to which each grid belongs.

The scene to which each grid belongs is determined for grids with simulated values replaced and grids with simulated values not replaced. Determine the scene to which the grid whose simulation value is replaced belongs to the road, and determine the scene to which each grid whose simulation value is not replaced belongs to according to the scene information on the electronic map.

Step 306. Determine the coverage weight of the grid and the thresholds corresponding to the wireless network parameters in the grid.

The basic principle of setting the coverage weight is: the greater the coverage weight, the greater the impact of the scene on the coverage of the wireless network; otherwise, the smaller the impact of the scene on the coverage of the wireless network.

The basic principle of setting the threshold value is: the lower the threshold value, the lower the wireless network coverage requirement of the scene, otherwise, the higher the wireless network coverage requirement of the scene. To set the PCCPCH_RSCP threshold and PCCPCH_C/I threshold.

Because in the embodiment, the scene to which the grid belongs may be a road, or a scene defined in an electronic map, and a scene on a general electronic map includes the following 13 types: water surface (Water), sea area (Sea), wetland (Wet_land ), Suburban Open Area (Suburban_Open_Area), Urban Open Area (Urban_Open_Area), Green Land (Green_Land), Forest (Forest), High Buildings (High_Buildings), General Ordinary Buildings (Ordinary_Regular_Buildings), Parallel Ordinary Buildings (Paralle_Requular_Buildings), Irregular Large Buildings (Irregular_Large_Buildings), irregular buildings (Irregular_Buildings) and suburban villages (Suburban_Village), therefore, the relationship between the scene, the scene (the grid in the scene) corresponding to the PCCPCH_RSCP threshold, PCCPCH_C/I threshold and coverage weight can be established As shown in Table 1. The corresponding relationship shown in Table 1 is not limited to being established in this step, and may also be established before this step.

Table 1

According to Table 1 and the scene to which the grid belongs, the coverage weight of the grid can be determined. For example, the coverage weight of the grid can be determined to be 1 according to the scene to which the grid belongs is green land, and the coverage weight of the grid can be determined to be 2 according to the scene to which the grid belongs is a suburban village.

According to Table 1 and the scene to which the grid belongs, for PCCPCH_RSCP and PCCPCH_C/I, the PCCPCH_RSCP threshold and PCCPCH_C/I threshold corresponding to the grid can be respectively determined. For example, according to the scene to which the grid belongs is a green field, it can be determined that the PCCPCH_RSCP threshold and the PCCPCH_C/I threshold corresponding to the grid are -90 and -3, respectively.

Step 307, determine whether the network coverage of the grid meets the coverage requirement.

When the PCCPCH_RSCP and PCCPCH_C/I corresponding to the grid are greater than the threshold determined in step 306, it is determined that the wireless network coverage of the grid meets the coverage requirement; otherwise, it is determined that the wireless network coverage of the grid does not meet the coverage requirement.

A bit can be used to represent the coverage attribute of the grid, and the coverage attribute is used to indicate whether the wireless network coverage in the grid meets the coverage requirements. This bit can be set to 1, indicating that the wireless network coverage of the grid meets the coverage requirements. Coverage requirement, if this bit is set to 0, it means that the wireless network coverage of the grid does not meet the coverage requirement.

Step 308, determine wireless network coverage.

Using the ratio of the sum of the coverage weights of the grids whose wireless network coverage meets the coverage requirements determined in step 307 to the sum of the coverage weights of all grids in the network coverage evaluation area, determine the wireless network coverage of the network coverage evaluation area Rate.

Specifically, the wireless network coverage can be determined by the following formula:

in,

coverage(i) represents the coverage attribute of the i-th grid, and the value of coverage(i) is 1 to indicate that the wireless network coverage in the i-th grid meets the coverage requirements, and the value of 0 is to indicate that the i-th grid The wireless network coverage does not meet the coverage requirements;

K(i) represents the coverage weight of the i-th grid, and the coverage weight is determined according to the scene to which the i-th grid belongs;

m is the number of grids in the network coverage evaluation area.

According to the methods provided in Embodiment 1 and Embodiment 2 of the present invention, the following equipment is provided.

Embodiment three,

Embodiment 3 of the present invention provides a device for determining wireless network coverage. The structural diagram of the device is shown in Figure 4(a) to Figure 4(d). The device specifically includes a measurement result determination module 11 and a simulation value determination module 12. Synthesis module 13, parameter measurement result determination module 14, replacement module 15 and coverage determination module 16, wherein:

The measurement result determination module 11 is used to obtain the wireless network parameter measurement value corresponding to each measurement point obtained by road test measurement in advance for the network coverage evaluation area divided into several grids; the simulation value determination module 12 is used for Describe the network coverage assessment area that is divided into several grids, and obtain the wireless network parameter simulation values corresponding to each grid that is simulated in advance by using the coverage simulation method; the synthesis module 13 is used to determine each grid that has a measurement point; The parameter measurement result determination module 14 is used to select the wireless network parameter measurement values corresponding to the measurement points contained in the grid from the obtained wireless network parameter measurement values for each determined grid; the replacement module 15 is used to use The selected measured value replaces the obtained simulated value of the wireless network parameter corresponding to the grid; the coverage determination module 16 is used to determine the Network coverage evaluates the wireless network coverage of the area.

The integration module 13 is specifically configured to determine each grid whose number of measurement points is greater than a set threshold.

The replacement module 15 is specifically configured to replace the obtained simulated value of the wireless network parameter corresponding to the grid with the average value of the selected multiple measured values.

As shown in Figure 4 (a), the coverage determination module 16 specifically includes:

The grid scene determining submodule 161 is used to determine the scene to which each grid belongs;

The weight determination sub-module 162 is used to determine the coverage weights corresponding to each grid according to the corresponding relationship between the set scene and the coverage weight and the determined scene to which each grid belongs;

The coverage judging sub-module 163 is used to judge whether the wireless network coverage of each grid meets the coverage requirements. If the wireless network coverage of the grid meets the coverage requirements, otherwise, it is determined that the wireless network coverage of the grid does not meet the coverage requirements;

The ratio determination sub-module 164 is used to determine the respective corresponding coverage weights of each grid, according to the sum of the coverage weights of each grid that meets the coverage requirements of the wireless network coverage and the coverage weight of all grids in the network coverage evaluation area. and determine the wireless network coverage in the network coverage evaluation area.

As shown in Figure 4 (b), the coverage determination module 16 can also specifically include:

The grid scene determining submodule 161 is used to determine the scene to which each grid belongs;

The weight determination sub-module 162 is used to determine the coverage weights corresponding to each grid according to the corresponding relationship between the set scene and the coverage weight and the determined scene to which each grid belongs;

The threshold determination sub-module 165 is used to determine the wireless network parameter thresholds corresponding to each grid according to the corresponding relationship between the set scene and the wireless network parameter threshold and the determined scene to which each grid belongs;

The coverage judging submodule 163 is used to judge whether the wireless network coverage of each grid meets the coverage requirement. For each grid, when the wireless network parameter simulation value corresponding to the grid is greater than the wireless network parameter threshold value corresponding to the grid , determine that the wireless network coverage of the grid meets the coverage requirements, otherwise, determine that the wireless network coverage of the grid does not meet the coverage requirements;

The ratio determination sub-module 164 is used to determine the respective corresponding coverage weights of each grid, according to the sum of the coverage weights of each grid that meets the coverage requirements of the wireless network coverage and the coverage weight of all grids in the network coverage evaluation area. and determine the wireless network coverage in the network coverage evaluation area.

As shown in Figure 4 (c), the coverage determination module 16 can also specifically include:

The grid scene determining submodule 161 is used to determine the scene to which each grid belongs;

The threshold determination sub-module 165 is used to determine the wireless network parameter thresholds corresponding to each grid according to the corresponding relationship between the set scene and the wireless network parameter threshold and the determined scene to which each grid belongs;

The coverage judging submodule 163 is used to judge whether the wireless network coverage of each grid meets the coverage requirement. For each grid, when the wireless network parameter simulation value corresponding to the grid is greater than the wireless network parameter threshold value corresponding to the grid , determine that the wireless network coverage of the grid meets the coverage requirements, otherwise, determine that the wireless network coverage of the grid does not meet the coverage requirements;

The ratio determination sub-module 164 is used to determine the wireless network coverage of the network coverage evaluation area according to the ratio of the number of grids whose wireless network coverage meets the coverage requirement to the number of all grids in the network coverage evaluation area.

As shown in Figure 4 (d), the coverage determination module 16 can also specifically include:

The coverage judging sub-module 163 is used to judge whether the wireless network coverage of each grid meets the coverage requirements. If the wireless network coverage of the grid meets the coverage requirements, otherwise, it is determined that the wireless network coverage of the grid does not meet the coverage requirements;

The ratio determination sub-module 164 is used to determine the wireless network coverage of the network coverage evaluation area according to the ratio of the number of grids whose wireless network coverage meets the coverage requirement to the number of all grids in the network coverage evaluation area.

Among them, the grid scene determination sub-module 161 is specifically used to determine the scene to which the grid whose simulation value is replaced belongs to a road, and determine the scene to which the grid whose simulation value has not been replaced belongs to the following way: according to the latitude and longitude information of the grid Determine the position of the grid on the electronic map. According to the scene information set on the electronic map, if the position of the grid covers a scene, the scene covered by the position of the grid is the scene to which the grid belongs. If the location of the grid covers multiple scenes, the scene with the largest area among the scenes covered by the grid is determined as the scene to which the grid belongs.

Embodiment four,

Embodiment 4 of the present invention provides a method for determining the coverage of a wireless network. The step flow of the method is shown in FIG. 5 , and specifically includes the following steps:

Step 401, determine the simulation value.

In this step, it is necessary to obtain simulated values of wireless network parameters corresponding to each grid obtained in advance using a coverage simulation method in the network coverage evaluation area.

Step 402, determine the scene to which each grid belongs.

In this step, the scene to which each grid belongs can be determined according to the scene information on the electronic map. Specifically, this step is the same as the method of determining the scene to which each grid belongs according to the scene information on the electronic map in the first embodiment.

Step 403, determine the coverage weight of the grid.

Step 404, determine whether the network coverage of the grid meets the coverage requirement.

Step 405, determine wireless network coverage.

Steps 403 to 405 in Embodiment 2 correspond to the same steps as Steps 2052 to 2054 in Embodiment 1, and will not be repeated here.

Of course, on the basis of step 401-step 405, by setting different coverage weights for the grids in different scenarios, and combining the coverage weights to improve the accuracy of the determined wireless network coverage, you can further pass The method of setting different thresholds for grids in different scenarios further improves the accuracy of the determined wireless network coverage.

After step 402, before step 404, also includes step 403':

Step 403', determining thresholds corresponding to each wireless network parameter in the grid.

This step is the same as step 2052' in the first embodiment, and will not be repeated here.

This step 403' is not limited to be performed after step 402 and before step 403 as shown in FIG. 2 , but may also be performed after step 403 and before step 404.

According to the method provided in Embodiment 4 of the present invention, the following equipment is provided.

Embodiment five,

Embodiment 5 of the present invention provides a device for determining wireless network coverage. The structural diagram of the device is shown in FIG. Judgment module 24 and ratio determination module 25, wherein:

The simulation value determination module 21 is used to obtain the wireless network parameter simulation value corresponding to each grid that is simulated in advance by using the coverage simulation method for the network coverage evaluation area that is divided into several grids; the grid scene determination module 22 is used to determine The scene to which each grid belongs; the weight determination module 23 is used to determine the corresponding coverage weight of each grid according to the corresponding relationship between the set scene and the coverage weight and the determined scene to which each grid belongs; the coverage judgment module 24 is used to In each grid, it is determined that the wireless network coverage meets the coverage requirements of each grid; the ratio determination module 25 is used to cover each grid according to the coverage weights corresponding to the determined grids, and according to the coverage weight of each grid that meets the coverage requirements according to the wireless network coverage The ratio of the sum to the sum of the coverage weights of all grids in the network coverage evaluation area determines the wireless network coverage of the network coverage evaluation area.

The coverage judging module 24 is specifically configured to, for each grid, determine that the wireless network coverage of the grid satisfies the coverage requirement when the simulated values of the wireless network parameters corresponding to the grid are greater than a set threshold value.

The coverage judging module 24 is specifically used to determine the wireless network parameter thresholds corresponding to each grid according to the corresponding relationship between the set scene and the wireless network parameter threshold value and the determined scene to which each grid belongs, and for each When the simulation value of the wireless network parameter corresponding to the grid is greater than the wireless network parameter threshold value corresponding to the grid, it is determined that the wireless network coverage of the grid meets the coverage requirement.

The grid scene determination module 22 is specifically used to determine the position of the grid on the electronic map according to the latitude and longitude information of the grid. According to the scene information set on the electronic map, if the position of the grid covers a scene, the grid The scene covered by the position of the grid is the scene to which the grid belongs. If the position of the grid covers multiple scenes, the scene with the largest area among the scenes covered by the grid is determined as the scene to which the grid belongs. .

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (4)

1. A method for determining wireless network coverage, characterized in that the method comprises: For the network coverage evaluation area divided into several grids, obtain the wireless network parameter simulation values corresponding to each grid obtained in advance by using the coverage simulation method, and the wireless network parameters corresponding to each measurement point obtained in advance by using the road test method Measurements; Divide the measurement points into the grids where they are located. For any grid, if it is determined that the grid is a grid with measurement points, each measurement point included in the grid The average value of the wireless network parameter measured value is determined as the wireless network parameter value of the grid, otherwise the wireless network parameter simulation value corresponding to the grid is determined as the wireless network parameter value of the grid; Determine the scene to which each grid belongs, and determine the coverage weight corresponding to each grid according to the corresponding relationship between the set scene and the coverage weight and the determined scene to which each grid belongs; In each grid, determine each grid whose wireless network coverage meets the coverage requirements; According to the determined coverage weights corresponding to each grid, according to the ratio of the sum of the coverage weights of the grids whose wireless network coverage meets the coverage requirements to the sum of the coverage weights of all the grids in the network coverage evaluation area, determine the Wireless network coverage in the network coverage assessment area; Among them, in each grid, it is determined that the wireless network coverage meets the coverage requirements of each grid, specifically including: According to the corresponding relationship between the set scene and the wireless network parameter threshold value and the determined scene to which each grid belongs, determine the wireless network parameter threshold value corresponding to each grid; For each grid, when the wireless network parameter value corresponding to the grid is greater than the wireless network parameter threshold value corresponding to the grid, it is determined that the wireless network coverage of the grid meets the coverage requirement. 2. The method according to claim 1, wherein determining the scene to which each grid belongs specifically comprises: Determine the position of the grid on the electronic map according to the latitude and longitude information of the grid; According to the scene information set on the electronic map, if the position of the grid covers one scene, the scene covered by the position of the grid is the scene to which the grid belongs; if the position of the grid covers multiple scenes , the scene with the largest area among the scenes covered by the grid is determined as the scene to which the grid belongs. 3. A device for determining wireless network coverage, characterized in that the device includes: The parameter value determination module is used to obtain the wireless network parameter simulation value corresponding to each grid obtained by using the coverage simulation method in advance for the network coverage evaluation area divided into several grids, and the wireless network parameter simulation value obtained by using the road test method in advance. The measured value of the wireless network parameter corresponding to the measurement point; The parameter value determination module is used to divide the measurement points into the grids where they are located. For any grid, if it is determined that the grid is a grid with measurement points, the The average value of the wireless network parameter measurement values of the measurement points included in the grid is determined as the wireless network parameter value of the grid, otherwise the wireless network parameter simulation value corresponding to the grid is determined as the grid value Wireless network parameter value; A grid scene determination module, configured to determine the scene to which each grid belongs; The weight determination module is used to determine the coverage weights corresponding to each grid according to the corresponding relationship between the set scene and the coverage weight and the determined scene to which each grid belongs; The coverage judging module is used to determine, in each grid, that the wireless network coverage meets the coverage requirements of each grid; The ratio determination module is used to determine the coverage weights corresponding to each grid, according to the coverage weight sum of each grid that meets the coverage requirement according to the wireless network coverage and the sum of the coverage weights of all grids in the network coverage evaluation area Determine the wireless network coverage rate of the network coverage evaluation area; wherein the coverage judgment module is specifically used to determine the scene to which each grid belongs according to the corresponding relationship between the set scene and the wireless network parameter threshold value, Determine the wireless network parameter threshold value corresponding to each grid, and for each grid, when the wireless network parameter value corresponding to the grid is greater than the wireless network parameter threshold value corresponding to the grid, determine the grid The wireless network coverage meets the coverage requirements. 4. The device according to claim 3, wherein the grid scene determination module is specifically configured to determine the position of the grid on the electronic map according to the latitude and longitude information of the grid, and according to the scene information set on the electronic map, If the position of the grid covers a scene, the scene covered by the grid is the scene to which the grid belongs. If the position of the grid covers multiple scenes, the scene covered by the grid The scene with the largest area is determined as the scene to which the grid belongs.