CN1422090A - Mobile communication network planning design and test result comparing technology - Google Patents

Abstract

The present invention is mobile communication network planning design and collected network data results test comparing technology. The network planning data and in-situ measurement data are input to an intuitive software platform and displayed simultaneously and the statistical results of key indexes are given. The present invention makes the user can detect the difference between network planning data and in-situ measurement data for improving design and optimizing network layout.

Description

Technology is contrasted in a kind of checking that is used for mobile communication network planning design and test result

The checking that the present invention relates to a kind of mobile communication network planning design result and data acquisition on the spot is according to technology.This technology is utilized a software platform intuitively, will arrange the data of the network planning of form and the data of network field survey simultaneously and import above-mentioned software platform, and show simultaneously, provides every statistics of key index.The present invention can make the user can find out gap between the test result after design result and real network are disposed rapidly intuitively, thereby provides effectively according to the result improving designing technique or optimizing network design according to designing requirement.

Can the performance of mobile communication system be not fully exerted and depend on the quality of network planning effect.Effectively and comprehensively the network planning can greatly improve the spectrum efficiency of network, reduces cost as much as possible simultaneously, and lays a good foundation for network optimization work in the future.The investment of the wireless network of a mobile communication system (base station) part is near 70% of gross investment, and the investment of core net and switching system only accounts for about 30%.Therefore, the effect of wireless network planning normally operator obtain one of key factor of mobile communications network operation success.Yet wireless network planning is the task of a complexity, and planning problem be it is believed that it is the NP-complete problem.Because the complexity of the network planning and related magnanimity are calculated, most of task of network planning design all is to adopt the computer project software of specialty to finish at present.On Communications Market, there has been increasing planning software to begin to occur at present.Yet so far, all planning softwares all lack a kind of effective means to be verified the design result of planning software, is can't ensure to reach planning and designing effect that people imagine in advance and there is not the design of effective checking means.Purpose of the present invention, utilize the data test result of actual existing network after the networking exactly, the design result of network planning software is carried out statistical testing of business cycles and contrasted, thereby make the user can assess the accuracy of planning software, analyze the correctness of planning algorithm, and then improve the flow process and the algorithm of the network planning, constantly promote the mass of foundation of mobile communications network design planning.

Because the main thought of network planning designing institute foundation is according to propagation loss, user distribution, the factors such as index of geography information and covering and capacity, determine site location, system parameters is set, and program results shown with X-Y scheme and the main foundation of the existing network data acquisition of network after building up is the speech quality index, and all information of drive test are shown with the form of line rather than face on the way.Therefore, how both being contrasted is the subject matter that this patent will solve.Provide a kind of like this software of new function both can be used as one independently software specialize in network planning design checking according to instrument, can be used as a functional module again and be embedded in the conventional network planning design or the poster processing soft.

Planning and designing checking among the present invention is by gathering existing network data on the spot, the planning and designing result being verified contrast according to the main thought of technology.Checking mainly comprises three aspects according to the content of technology: drive test sampling, data processing and statistical testing of business cycles.The content of three aspects is below described: one respectively. the drive test sampling

Different with cable network, there is great correlation the quality of Radio Link and position.Usually, the link load that near cellphone subscriber is subjected to from the base station is smaller, and the user far away from the base station is then opposite.The cellphone subscriber near from building also can be subjected to more serious decline than the user who is in field.In addition, the quality of Radio Link is constantly to change.Therefore, checking needs rational drive test sampled point accurately.Choosing of test route should cover all planning regions as much as possible.Certainly, the test of full ground, planning region no matter from still being economically on practical feasibility, all is impossibly.We are divided into many sub regions to the planning region by traffic density usually, and each subregion selects a certain proportion of road and street to measure, and the test ratio is strengthened in the heavy place of traffic density.Two. data processing

The mobile phone received signal is owing to be subjected to the influence of rapid fading, and intensity is constantly changing in time.When exist two or more signal strength signal intensities quite, during the signal of phase place random distribution, the signal that mobile phone receives is the Rayleigh decline.And if one of them signal is stronger when a lot of than other signal, received signal is the Ricean decline.In order to obtain local average, need average to received signal.Through deriving, the received signal that error is enough little obtain 50 data points of need in the scope of 40 wavelength, sampling, and these 50 data points are averaged.Three. statistical testing of business cycles

The expression formula of planning value and measured value can be expressed as: $e\left(x\right)=\hat{p}\left(x\right)-p\left(x\right)----\left(1\right)$ Wherein,

Be the planning value, p (x) is a measured value.The probability distribution of error is shown intuitively by block diagram or other various charts, thereby make the user be easy to find out the error of program results.In addition, the error method for expressing is its average and variance more intuitively: $\stackrel{\&OverBar;}{e}=\frac{1}{N}\underset{i=1}{\overset{N}{\mathrm{\&Sigma;}}}{e}_i----\left(2\right)$ $S^2=\frac{1}{N-1}\underset{i=1}{\overset{N}{\mathrm{\&Sigma;}}}{(e_i-\stackrel{\&OverBar;}{e})}^2----\left(3\right)$ Wherein, e is the planning error, and N is the sampled point number.The accuracy of average and variance estimation is relevant with the quantity of sampled point.The mean value error accuracy is expressed as: $P(-c<x<c)=\underset{x=-c}{\overset{c}{\&Integral;}}\frac{1}{\sqrt{{2\mathrm{\&pi;\&sigma;}}_x^2}}{e}^{-\frac{x^2}{2}}\mathrm{dx}----\left(4\right)$ Wherein, P represents the probability of evaluated error between [c, c].Variance error accuracy is expressed as: $P(1-\mathrm{\&beta;}<\frac{S^2}{{\mathrm{\&sigma;}}_e^2}<1+\mathrm{\&beta;})$ $=\underset{(N-1)(1-\mathrm{\&beta;})}{\overset{(N+1)(1+\mathrm{\&beta;})}{\&Integral;}}$ $\left(x\right)$ $\mathrm{dx}----\left(5\right)$ $f\left(x\right)=\frac{1}{2^{\frac{n}{2}}\mathrm{\&Gamma;}\left(\frac{n}{2}\right)}{x}^{\frac{n}{2}-1}{e}^{-\frac{x}{2}}----\left(6\right)$ Wherein P represents to estimate the probability of error-free percentage between [β, β].

Claims (5)

1. technology is contrasted in a checking that is used between mobile communication network planning design data and the real network service data, this technology can be simultaneously will be utilized the data of diverse network planning and designing software output and be utilized existing network data that various drive test data collecting devices collect according to predetermined specific software platform of form typing, and shows according to same demonstration rule.

2. the checking described in claim 1 is according to technology, be meant the GPS latitude and longitude information that the two-dimentional display result that mobile communication network planning software can be exported is provided according to the existing network image data, the same category information that extracts the longitude and latitude correspondence from program results is contrasted technique for displaying.

3. the predetermined format described in claim 1 is meant the data format that present widely used GSM and cdma network planning and designing software can be exported, and comprises EXCEL form and text formatting.

4. the specific software platform described in claim 1, be meant (1) Software tool that independently can show the data that needed network planning data and existing network are gathered simultaneously, this Software tool has user interface and internal algorithm instrument, both be different from conventional network planning design software instrument, be different from network optimization the poster processing soft again, perhaps (2) software modules that are embedded in network planning design software or network optimization the poster processing soft.

5. that the same demonstration rule described in claim 1 is meant demonstration in the present invention is not whole network planning and designing results, but with the network planning design result of the corresponding route of existing network drive test circuit, the obtaining to extract from the planning and designing result according to the latitude and longitude information that is comprised in the existing network drive test data of these results obtains.