CN115802377A - Method for obtaining optimized case combination of communication network - Google Patents

Abstract

The invention discloses a method for obtaining an optimized case combination of a communication network, wherein the case combination comprises a digital map and a propagation model, and the method comprises the following steps: firstly, the digital map is refined; secondly, correcting the propagation model, wherein optimization personnel need to test different geographical environments of each region, and parameters of the propagation model are corrected by means of analysis, calculation and the like; thirdly, designing a test case set according to the refined digital map and the corrected propagation model; and fourthly, testing the passing network by using the test case set. According to the invention, the digital map and the propagation model in the case combination are accurately corrected according to the local actual condition, and the test case set is designed according to the correction result, so that the test case set eliminates the part influencing the test speed, thereby being beneficial to obtaining a better case combination during communication test and improving the efficiency.

Description

Method for obtaining optimized case combination of communication network

Technical Field

The invention relates to the technical field of communication network optimization, in particular to a method for acquiring an optimized case combination of a communication network.

Background

In order to adapt to the rapid development of mobile communication networks and the rapid increase of the number of users and the service volume, the network optimization department of operation enterprises should adopt advanced technical means and reasonable test methods to reasonably determine the capacity proportion of each network element device, improve the utilization rate of the network devices and realize the scientific planning, optimization and reasonable design of the networks. In a mobile communication network test system, because digital maps of various regions are different and propagation models caused by network coverage are different, test methods are also different, if all test requirements specified in a standard are to be covered, a larger test case set needs to be designed, and the time cost, the period length and the efficiency required by the test are high, and the efficiency is low.

In view of this, we propose a method of obtaining an optimized combination of use cases for a communication network.

Disclosure of Invention

The invention aims to provide a method for obtaining an optimized case combination of a communication network, which solves the problems of high time cost, long period and low efficiency required by testing.

In order to achieve the purpose, the invention provides the following technical scheme: a method for obtaining optimized use case combination of a communication network, wherein the use case combination comprises a digital map and a propagation model, and the method comprises the following steps:

the first step, the digital map is refined, and the digital map used for analyzing the condition of the mobile communication network comprises geographic information which has influence on the propagation of mobile communication electric waves, such as terrain height, ground use types and the like;

secondly, correcting the propagation model, wherein optimization personnel need to test different geographical environments of each region, and modify parameters of the propagation model through means such as analysis and calculation;

thirdly, designing a test case set according to the refined digital map and the corrected propagation model;

and fourthly, testing the passing network by using the test case set.

Preferably, the digital map is accurately sampled in a mixed precision mode, namely, a high-precision specification is adopted in a large city region with high telephone traffic density, a lower-precision specification is adopted in a suburb and a medium-small city, and a lower-precision specification can be adopted in vast rural areas and remote areas. The sampling interval standard of the high-precision specification is 5m.

Preferably, the propagation model is corrected by actually erecting a transmitter to perform a CW test, so that an optimizer can obtain the most accurate path loss value of the wireless signal, and repeatedly correct the path loss value and the simulation result to finally obtain the propagation model which can reflect the local wireless propagation environment and has the most theoretical reliability.

Preferably, the step of propagation model parameter modification includes:

s1, researching local geographical conditions, determining landform type division, and selecting a proper base station, a proper test route and a proper measurement frequency band;

s2, carrying out detailed test through the transmitting equipment and the receiving equipment;

s3, converting the test data, inputting the converted test data into planning software to calculate the test data to gradually approach to an optimal value, repeatedly correcting the test data to obtain a model correction parameter closest to an actual environment, and retesting and analyzing a data part with a large error;

and S4, uniformly analyzing the data of all terrains to obtain a final result suitable for classifying all terrains.

Compared with the prior art, the invention has the following beneficial effects:

according to the invention, the digital map and the propagation model in the case combination are accurately corrected according to the local actual condition, and the test case set is designed according to the correction result, so that the test case set eliminates the part influencing the test speed, thereby being beneficial to obtaining a better case combination during communication test and improving the efficiency.

Drawings

FIG. 1 is a flow chart of a method for obtaining an optimized case combination for a communication network according to the present invention;

FIG. 2 is a flow chart illustrating propagation model parameter tailoring according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.

Referring to fig. 1 to 2, the present invention provides a technical solution: a method for obtaining optimized use case combination of a communication network, wherein the use case combination comprises a digital map and a propagation model, and the method comprises the following steps:

the first step, the digital map is refined, and the digital map used for analyzing the condition of the mobile communication network comprises geographic information which has influence on the propagation of mobile communication electric waves, such as terrain height, ground use types and the like; the sampling interval of the digital map is related to the complexity of the propagation environment, different propagation environments often have different complexities, and the more complex the propagation environment, the higher the requirement on the sampling interval of the digital map. In selecting a suitable digital map, the accuracy and cost issues should be traded off in conjunction with the actual situation in the area. The digital map is accurate by adopting a 'mixed precision' mode to sample landforms, namely, a high-precision specification is adopted in a large city and a high-traffic density city, a lower-precision specification is adopted in suburbs and medium-small cities, and a lower-precision specification can be adopted in vast rural areas and remote areas. Different sampling interval standards are 5m, 20m, 50m, 100m and the like, and the sampling interval standard of the high-precision standard is 5m.

Secondly, correcting the propagation model, wherein optimization personnel need to test different geographical environments of each region, and parameters of the propagation model are corrected by means of analysis, calculation and the like; and correcting the propagation model by actually erecting a transmitter to carry out CW test, so that the optimization personnel can obtain the most accurate path loss value of the wireless signal, and repeatedly correct the path loss value and the simulation result to finally obtain the propagation model which can reflect the local wireless propagation environment most and has the theoretical reliability. In cities, the increase of tall buildings and dense residential areas can cause the change of wireless propagation environment, and when the change reaches a certain degree, the parameters of the propagation model need to be corrected, so that the authenticity of wireless simulation is improved. The main steps of propagation model parameter modification are shown in fig. 1.

S1, researching local geographical conditions, determining landform type division, and selecting a proper base station, a proper test route and a proper measurement frequency band;

s2, carrying out detailed test through the transmitting equipment and the receiving equipment;

s3, converting the test data, inputting the converted test data into planning software to calculate the test data to gradually approach to an optimal value, repeatedly correcting the test data to obtain a model correction parameter closest to an actual environment, and retesting and analyzing a data part with a large error;

and S4, uniformly analyzing the data of all terrains to obtain a final result suitable for classifying all terrains.

Thirdly, designing a test case set according to the refined digital map and the corrected propagation model; the test case set eliminates the part influencing the test speed, is beneficial to obtaining better case combination during communication test, and simultaneously improves the efficiency.

And fourthly, testing the passing network by using the test case set.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. A method for obtaining optimized use case combination of a communication network is provided, the use case combination comprises a digital map and a propagation model, and the method is characterized by comprising the following steps:

the first step, the digital map is refined, and the digital map used for analyzing the condition of the mobile communication network comprises geographic information which has influence on the propagation of mobile communication electric waves, such as terrain height, ground use types and the like;

secondly, correcting the propagation model, wherein optimization personnel need to test different geographical environments of each region, and modify parameters of the propagation model through means such as analysis and calculation;

thirdly, designing a test case set according to the refined digital map and the corrected propagation model;

and fourthly, testing the passing network by using the test case set.

2. The method of claim 1, wherein the method comprises the steps of: the digital map is accurate by adopting a 'mixed precision' mode to sample landforms, namely, a high-precision specification is adopted in a large city and a high-traffic density city, a lower-precision specification is adopted in suburbs and medium-small cities, and a lower-precision specification can be adopted in vast rural areas and remote areas.

3. The method of claim 2, wherein the method for obtaining an optimized combination of use cases for a communication network comprises: the sampling interval standard of the high-precision specification is 5m.

4. The method of claim 1, wherein the method comprises the steps of: the propagation model correction is realized by actually erecting a transmitter for CW test, so that an optimizer can obtain the most accurate path loss value of the wireless signal, and repeatedly correct the path loss value and the simulation result to finally obtain the propagation model which can reflect the local wireless propagation environment and has the most theoretical reliability.

5. The method of claim 4, wherein the step of propagation model parameter tailoring comprises:

s1, researching local geographical conditions, determining landform type division, and selecting a proper base station, a proper test route and a proper measurement frequency band;

s2, carrying out detailed test through the transmitting equipment and the receiving equipment;

s3, converting the test data, inputting the converted test data into planning software to calculate the test data to gradually approach to an optimal value, repeatedly correcting the test data to obtain a model correction parameter closest to an actual environment, and retesting and analyzing a data part with a large error;

and S4, uniformly analyzing the data of all terrains to obtain a final result suitable for classifying all terrains.

Images