CN105722114A - Method and apparatus for analyzing downlink interference of LTE network - Google Patents

Abstract

The invention provides an analysis method and device for LTE network downlink interference, which is used to solve the problem that the prior art cannot comprehensively and intuitively reflect the performance of the LTE wireless network. The present invention includes: obtaining network performance index KPI data information and network measurement report MR data information collected by terminals belonging to the main cell to be tested; according to the MR data information, obtaining modulo three interference intensity, overlapping coverage and adjacent cell overcoverage degree, and according to the KPI data information, obtain the media access control MAC layer downlink error block rate; Rates are compared and analyzed with different threshold values to obtain the downlink interference source of the main cell to be tested. The embodiment of the present invention reflects network performance comprehensively and intuitively by analyzing network performance index KPI data information and network measurement report MR data information.

Description

A method and device for analyzing downlink interference of an LTE network

technical field

The present invention relates to the technical field of communication applications, in particular to an analysis method and device for LTE network downlink interference.

Background technique

To evaluate and optimize the Long Term Evolution LTE network, the main method currently used is Drive Test (DT), which analyzes the downlink interference based on the Signal-to-Interference-plus-Noise Ratio (SINR) at the sampling point and the signal strength of neighboring cells. The downlink interference of the network on the road can be reflected through the drive test, and the test can be carried out for the user complaint area to reproduce the problem. However, there are the following problems.

1. Drive test (DT) data can only reflect road network conditions, but cannot represent the downlink quality in the overall area of network elements.

2. When using the drive test to reproduce the problem, the environment where the problem occurred cannot be completely restored.

3. The drive test can only be tested within a certain time and area, and cannot evaluate the network quality around the clock.

When using drive test technology to evaluate the LTE network, it cannot comprehensively and intuitively reflect the performance of the LTE network. Network performance data can reflect the performance of all aspects of the network, and it is also an important data source when analyzing the network downlink quality; the network measurement report can reflect the wireless environment of the user at a specific moment, and the alarm information in the network measurement report can reflect Network hardware failure, transmission failure and other information; the engineering parameters in the network measurement report can reflect the basic information of the base station/cell, such as name, geographical location, etc.; the cell parameters in the network measurement report can reflect the basic network configuration information of the cell, Therefore, MR data can not only supplement network performance data (KPI) and drive test data (DT), but also independently evaluate network performance, which is a necessary condition for analyzing network structure. However, KPI is rarely involved in existing LTE downlink interference analysis technologies Analysis of class data and MR class data.

Contents of the invention

The purpose of the present invention is to provide an analysis method and device for LTE network downlink interference, which is used to solve the problem that existing technologies for evaluating downlink interference performance of LTE wireless networks cannot comprehensively and intuitively reflect network performance.

In order to achieve the above object, the present invention provides a method for analyzing LTE network downlink interference, including:

Obtain network performance index KPI data information and network measurement report MR data information collected by terminals belonging to the primary cell to be tested;

According to the MR data information, obtain the modulus three interference intensity, the overlapping coverage degree and the adjacent cell over-coverage degree, and obtain the media access control MAC layer downlink block error rate according to the KPI data information;

Comparing and analyzing the modulus three interference intensity, the overlapping coverage, the adjacent cell over-coverage and the downlink block error rate of the MAC layer with different thresholds respectively, to obtain the source of downlink interference.

Wherein, in the above-mentioned method for analyzing downlink interference of the LTE network, the MR data information includes: the signal strength RSRP of the main cell to be tested and the neighboring cell, the physical cell identity PCI of the main cell to be tested and the neighboring cell, and the Describe the number of adjacent cells of the primary cell to be tested.

Wherein, according to the MR data information, the step of obtaining the modulus three interference intensity specifically includes:

According to the RSRP and PCI of the main cell to be tested and the neighboring cell, the first number of information satisfying a first preset condition is obtained from the MR data information, and the first preset condition is that the main cell to be tested is The PCI modulus three of the cell is equal to the PCI modulus three of the neighboring cell and the difference between the RSRP of the primary cell to be tested and the RSRP of the neighboring cell is smaller than a first predetermined threshold;

According to the RSRP of the main cell to be tested and the RSRP of the neighboring cell, obtain a second information number that satisfies a second preset condition from the MR data information, and the second preset condition is that the main cell to be tested The difference between the RSRP of the cell and the RSRP of the neighboring cell is less than a second predetermined threshold;

The modulo-three interference strength is obtained according to the first information number and the second information number.

Wherein, according to the MR data information, the step of obtaining overlapping coverage includes:

According to the RSRP of the primary cell to be tested, the RSRP of the neighboring cell, and the number of neighboring cells of the primary cell to be tested, obtain a third number of information satisfying a third preset condition from the MR data information, wherein , the third preset condition is that the difference between the RSRP of the primary cell to be tested and the RSRP of the neighboring cell is less than a third predetermined threshold, and the number of neighboring cells is greater than or equal to a fourth predetermined threshold;

The overlapping coverage is obtained according to the third information number and the total information number, wherein the total information number is the total number of network measurement report MR data information collected by terminals belonging to the primary cell to be measured.

Wherein, according to the MR data information, the step of obtaining the over-coverage degree of the neighboring cell specifically includes:

According to the RSRP of the primary cell to be tested and the RSRP of the neighboring cell, obtain a fourth information number satisfying a fourth preset condition from the MR data information, where the fourth preset condition is the It is measured that the difference between the RSRP of the primary cell and the RSRP of the neighbor cell is less than the fifth predetermined threshold;

According to the RSRP of the primary cell to be tested, a fifth number of information that satisfies a fifth preset condition is obtained from the MR data information, wherein the fifth preset condition is that the RSRP of the primary cell to be tested is greater than the first Six predetermined thresholds;

According to the fourth information number and the fifth information number, the over-coverage degree of the neighboring cell is obtained.

Wherein, the said modulo three interference intensity, the overlapping coverage, the adjacent cell over-coverage and the downlink block error rate of the MAC layer are compared with different thresholds respectively to obtain the The steps of the downlink interference source of the primary cell specifically include:

If the downlink block error rate of the MAC layer is less than or equal to a first threshold value, then determining that the main cell to be tested has no downlink interference;

If the downlink block error rate of the MAC layer is greater than the first threshold value, and the modulus three interference intensity is greater than the second threshold value, then determine that the downlink interference source of the primary cell to be tested is modulo three interference and output Mode 3 interferes with neighboring cells;

If the downlink block error rate of the MAC layer is greater than the first threshold value, the modulus three interference intensity is less than or equal to the second threshold value and the overlapping coverage is greater than the third threshold value, then determine the The downlink interference source of the primary cell to be tested is overlapping coverage interference and output overlapping coverage adjacent cells;

If the downlink block error rate of the MAC layer is greater than the first threshold value, the modulo three interference intensity is less than or equal to the second threshold value, and the overlapping coverage is less than or equal to the third preset value , and the neighbor cell over-coverage degree is greater than the fourth preset value, then determine that the downlink interference source of the main cell to be tested is the neighbor cell over-coverage interference and output the over-coverage neighbor cell; or

If the downlink block error rate of the MAC layer is greater than the first threshold value, the modulo three interference intensity is less than or equal to the second threshold value, and the overlapping coverage is less than or equal to the third preset value , and the neighbor cell over-coverage degree is less than or equal to the fourth preset value, then it is determined that the downlink interference source of the primary cell under test is external interference or inter-system interference.

Wherein, comparing and analyzing the module three interference intensity, the overlapping coverage, the over-coverage of the adjacent cell, and the downlink block error rate of the MAC layer of the cell with different thresholds respectively, the obtained After the step of the downlink interference source of the primary cell to be tested, the method also includes:

If the downlink interference source of the main cell to be tested is modulo three interference, then adjust PCI, transmit power, antenna azimuth and/or downtilt;

If the downlink interference source of the primary cell to be tested is overlapping coverage interference, then adjusting inter-cell coordination power and/or coverage;

If the downlink interference source of the main cell to be tested is the over-coverage interference of adjacent cells, then adjust the transmit power, site height, antenna azimuth and/or downtilt; or

If the downlink interference source of the main cell to be tested is external interference or inter-system interference, on-site frequency scanning is performed.

Embodiments of the present invention also provide an analysis device for LTE network downlink interference, including:

An acquisition module, configured to acquire network performance index KPI data information and network measurement report MR data information collected by terminals belonging to the primary cell to be tested;

The generation module is used to obtain the modulus three interference intensity, overlapping coverage degree and adjacent cell over-coverage degree according to the MR data information, and obtain the media access control MAC layer downlink block error rate according to the KPI data information;

The analysis module is used to compare and analyze the three-mode interference intensity, the overlapping coverage, the adjacent cell over-coverage and the downlink block error rate of the MAC layer with different thresholds, and obtain the The downlink interference source of the primary cell to be tested.

Wherein, in the above-mentioned device for analyzing downlink interference of the LTE network, the MR data information includes: the signal strength RSRP of the main cell to be tested and the neighboring cell, the physical cell identity PCI of the main cell to be tested and the neighboring cell, and the Describe the number of adjacent cells of the primary cell to be tested.

Wherein, the generating module includes:

A first acquiring unit, configured to acquire a first number of information satisfying a first preset condition from the MR data information according to the RSRP and PCI of the main cell to be tested and the neighboring cell, the first preset The condition is that the PCI module three of the primary cell to be tested is equal to the PCI module three of the neighboring cell and the difference between the RSRP of the primary cell to be tested and the RSRP of the neighboring cell is smaller than a first predetermined threshold;

The second acquiring unit is configured to acquire a second information number satisfying a second preset condition from the MR data information according to the RSRP of the primary cell to be tested and the RSRP of the neighboring cell, the second preset The condition is that the difference between the RSRP of the primary cell to be tested and the RSRP of the neighboring cell is smaller than a second predetermined threshold;

A first generating unit, configured to obtain the modulo three interference strength according to the first information number and the second information number.

Wherein, the generating module includes:

A third acquiring unit, configured to obtain from the MR data information that satisfies a third preset condition according to the RSRP of the primary cell to be tested, the RSRP of the neighboring cell, and the number of neighboring cells of the primary cell to be tested The third information number, wherein the third preset condition is that the difference between the RSRP of the main cell to be tested and the RSRP of the neighboring cell is less than the third predetermined threshold, and the number of neighboring cells is greater than or equal to the fourth predetermined threshold;

The second generating unit is configured to obtain the overlapping coverage according to the third information number and the total information number, wherein the total information number is a network measurement report MR collected by a terminal belonging to the primary cell to be measured The total number of data messages.

Wherein, the generating module includes:

A fourth obtaining unit, configured to obtain, from the MR data information, a fourth information number satisfying a fourth preset condition according to the RSRP of the primary cell to be tested and the RSRP of the neighboring cell, wherein the fourth The preset condition is that the difference between the RSRP of the primary cell to be tested and the RSRP of the neighboring cell is smaller than a fifth predetermined threshold;

A fifth acquiring unit, configured to acquire, from the MR data information, a fifth number of information satisfying a fifth preset condition according to the RSRP of the primary cell to be tested, wherein the fifth preset condition is the The measured RSRP of the primary cell is greater than the sixth predetermined threshold;

A third generating unit, configured to obtain the neighbor cell over-coverage degree according to the fourth information number and the fifth information number.

Wherein, the analysis module includes:

A first analyzing unit, configured to determine that the primary cell under test has no downlink interference if the MAC layer downlink block error rate is less than or equal to a first threshold;

The second analysis unit is configured to determine the downlink interference of the main cell to be tested if the downlink block error rate of the MAC layer is greater than the first threshold value and the modulo three interference intensity is greater than the second threshold value The source is the modulus three interference and outputs the modulo three interference neighboring cell;

A third analysis unit, configured to if the downlink block error rate of the MAC layer is greater than the first threshold, the modulo three interference intensity is less than or equal to the second threshold, and the overlapping coverage is greater than the third threshold value, then it is determined that the downlink interference source of the main cell to be tested is overlapping coverage interference and output overlapping coverage adjacent cells;

A fourth analysis unit, configured to if the downlink block error rate of the MAC layer is greater than the first threshold value, the modulo three interference intensity is less than or equal to the second threshold value, and the overlapping coverage is less than or equal to The third preset value, and the neighbor cell over-coverage degree is greater than the fourth preset value, then determine that the downlink interference source of the main cell to be tested is the neighbor cell over-coverage interference and output the over-coverage neighbor cell; or

The fifth analysis unit is configured to: if the downlink block error rate of the MAC layer is greater than the first threshold value, the modulo three interference intensity is less than or equal to the second threshold value, and the overlapping coverage is less than or equal to The third preset value, and the neighbor cell over-coverage degree is less than or equal to the fourth preset value, then it is determined that the downlink interference source of the primary cell to be tested is external interference or inter-system interference.

Wherein, the above-mentioned analysis device for LTE network downlink interference also includes:

A first adjustment module, configured to adjust PCI, transmit power, antenna azimuth and/or downtilt if the downlink interference source of the primary cell to be tested is modulo three interference;

A second adjustment module, configured to adjust inter-cell coordination power and/or coverage if the downlink interference source of the main cell to be tested is overlapping coverage interference;

The third adjustment module is configured to adjust the transmit power, site height, antenna azimuth and/or downtilt if the downlink interference source of the main cell to be tested is the over-coverage interference of adjacent cells; or

The fourth adjustment module is configured to perform on-site frequency scanning if the downlink interference source of the primary cell to be tested is external interference or inter-system interference.

Embodiments of the present invention have the following beneficial effects:

The analysis method for LTE network downlink interference in the embodiment of the present invention can intuitively and comprehensively judge the network downlink interference by analyzing the MAC layer downlink block error rate, modulo three interference intensity, overlapping coverage, and adjacent cell over-coverage in sequence. Interference problems and provide corresponding optimization suggestions for the network downlink interference problems.

Description of drawings

Fig. 1 represents the working flow chart of the analysis method of the LTE network downlink interference of the embodiment of the present invention;

Fig. 2 represents the analysis schematic diagram of the analysis method of the LTE network downlink interference of the embodiment of the present invention;

FIG. 3 shows a structural block diagram of an analysis device for LTE network downlink interference according to an embodiment of the present invention.

detailed description

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to specific embodiments and accompanying drawings.

Embodiments of the present invention provide a method and device for analyzing downlink interference of an LTE network, which solves the problem that the prior art cannot comprehensively and intuitively reflect the performance of the LTE wireless network.

The analysis method of the LTE network downlink interference of the embodiment of the present invention, as shown in Figure 1, includes:

Step S11: Acquiring network performance index KPI data information and network measurement report MR data information collected by terminals belonging to the main cell to be tested.

In a specific embodiment of the present invention, the MR data information includes: the signal strength RSRP of the main cell to be tested and the neighboring cell, the physical cell identity PCI of the main cell to be tested and the neighboring cell, and the Measure the number of neighboring cells of the main cell.

Step S12: According to the MR data information, obtain the modulo-three interference intensity, overlapping coverage degree, and adjacent cell over-coverage degree, and obtain the MAC layer downlink block error rate according to the KPI data information.

In a specific embodiment of the present invention, according to the MR data information, the step of obtaining the modulus three interference intensity specifically includes:

According to the RSRP and PCI of the main cell to be tested and the neighboring cell, the first number of information satisfying a first preset condition is obtained from the MR data information, and the first preset condition is that the main cell to be tested is The PCI modulus three of the cell is equal to the PCI modulus three of the neighboring cell and the difference between the RSRP of the main cell to be tested and the RSRP of the neighboring cell is smaller than a first predetermined threshold, wherein the first predetermined threshold may be specifically 6dBm;

According to the RSRP of the main cell to be tested and the RSRP of the neighboring cell, obtain a second information number that satisfies a second preset condition from the MR data information, and the second preset condition is that the main cell to be tested The difference between the RSRP of the cell and the RSRP of the neighboring cell is smaller than a second predetermined threshold, where the second predetermined threshold may be specifically 6dBm;

The ratio of the first information number to the second information number is used as the modulo-three interference strength.

In a specific embodiment of the present invention, the step of obtaining the overlapping coverage according to the MR data information specifically includes:

According to the RSRP of the primary cell to be tested, the RSRP of the neighboring cell, and the number of neighboring cells of the primary cell to be tested, obtain a third number of information satisfying a third preset condition from the MR data information, wherein , the third preset condition is that the difference between the RSRP of the main cell to be tested and the RSRP of the neighboring cell is less than a third predetermined threshold, such as 6dBm, and the number of neighboring cells is greater than or equal to a fourth predetermined threshold, which can be specifically is 3;

Taking the ratio of the third number of information to the total number of information as the overlapping coverage, wherein the total number of information is the total number of network measurement report MR data information collected by terminals belonging to the primary cell to be measured.

In a specific embodiment of the present invention, according to the MR data information, the step of obtaining the over-coverage of adjacent cells specifically includes:

According to the RSRP of the primary cell to be tested and the RSRP of the neighboring cell, obtain a fourth information number satisfying a fourth preset condition from the MR data information, where the fourth preset condition is the It is measured that the difference between the RSRP of the primary cell and the RSRP of the neighboring cell is less than a fifth predetermined threshold, where the fifth predetermined threshold may be specifically 5dBm;

According to the RSRP of the primary cell to be tested, a fifth number of information that satisfies a fifth preset condition is obtained from the MR data information, wherein the fifth preset condition is that the RSRP of the primary cell to be tested is greater than the first Six predetermined thresholds, wherein the fifth predetermined threshold may be -95dBm;

A ratio of the fourth information number to the fifth information number is used as the neighbor cell over-coverage degree.

In a specific embodiment of the present invention, the above preset conditions and predetermined thresholds can be adaptively modified according to the development of the network, and are not limited to the above description.

Step S13: Comparing and analyzing the modulus three interference intensity, the overlapping coverage, the adjacent cell over-coverage, and the downlink block error rate of the MAC layer with different threshold values, and obtaining the to-be-tested The downlink interference source of the primary cell.

In a specific embodiment of the present invention, the step S13 specifically includes:

If the downlink block error rate of the MAC layer is less than or equal to a first threshold value, then determining that the main cell to be tested has no downlink interference;

If the downlink block error rate of the MAC layer is greater than the first threshold value, and the modulus three interference intensity is greater than the second threshold value, then determine that the downlink interference source of the primary cell to be tested is modulo three interference and output Mode 3 interferes with neighboring cells;

If the downlink block error rate of the MAC layer is greater than the first threshold value, the modulus three interference intensity is less than or equal to the second threshold value and the overlapping coverage is greater than the third threshold value, then determine the The downlink interference source of the primary cell to be tested is overlapping coverage interference and output overlapping coverage adjacent cells;

If the downlink block error rate of the MAC layer is greater than the first threshold value, the modulo three interference intensity is less than or equal to the second threshold value, and the overlapping coverage is less than or equal to the third preset value , and the neighbor cell over-coverage degree is greater than the fourth preset value, then determine that the downlink interference source of the main cell to be tested is the neighbor cell over-coverage interference and output the over-coverage neighbor cell; or

If the downlink block error rate of the MAC layer is greater than the first threshold value, the modulo three interference intensity is less than or equal to the second threshold value, and the overlapping coverage is less than or equal to the third preset value , and the neighbor cell over-coverage degree is less than or equal to the fourth preset value, then it is determined that the downlink interference source of the primary cell under test is external interference or inter-system interference.

In a specific embodiment of the present invention, the three-mode interference intensity, the overlapping coverage, the adjacent cell over-coverage and the downlink block error rate of the MAC layer of the cell are respectively compared with different threshold values After performing comparative analysis to obtain the step of the downlink interference source of the main cell to be tested, the method also includes:

If the downlink interference source of the main cell to be tested is modulo three interference, then adjust PCI, transmit power, antenna azimuth and/or downtilt;

If the downlink interference source of the primary cell to be tested is overlapping coverage interference, then adjusting inter-cell coordination power and/or coverage;

If the downlink interference source of the main cell to be tested is the over-coverage interference of adjacent cells, then adjust the transmit power, site height, antenna azimuth and/or downtilt; or

If the downlink interference source of the main cell to be tested is external interference or inter-system interference, on-site frequency scanning is performed.

The embodiment of the present invention evaluates and optimizes the LTE network based on the analysis of KPI-type data and MR-type data, and can characterize the downlink quality situation in the overall area of the network element, and get rid of the existing technology that can only be used in a certain time and area within the limits of the test.

The following specifically illustrates the process of analyzing the network downlink interference problem according to the MAC layer downlink block error rate, modulo three interference intensity, overlapping coverage degree and adjacent cell over-coverage degree according to the embodiment of the present invention.

In a specific embodiment of the present invention, as shown in Figure 2, including:

Step 21: Determine whether the downlink block error rate of the MAC layer is greater than the first threshold value, wherein the first threshold value can be specifically 1%, and when the downlink block error rate of the MAC layer is less than or equal to 1%, it means that the master to be tested There is no downlink interference problem in the cell, and when the downlink block error rate of the MAC layer is greater than the first threshold value of 1%, go to step 22;

Step 22: Determine whether the intensity of the mode-3 interference is greater than the second threshold value, wherein the second threshold value can be specifically 20%, and when the intensity of the mode-3 interference is greater than 20%, determine the downlink interference of the main cell to be tested The source is the mode three interference, output the mode three interference adjacent cell, and adjust the PCI, transmit power, antenna azimuth and/or downtilt angle to suppress the interference; when the mode three interference intensity is less than or equal to 20%, go to step 23 ;

Step 23: Determine whether the overlapping coverage is greater than a third threshold, wherein the third threshold may be specifically 10%, and when the overlapping coverage is greater than 10%, determine that the downlink interference source of the main cell to be tested is Overlap coverage interference, output overlapping coverage adjacent cells, and adjust inter-cell coordination power and/or coverage to suppress interference; when the overlap coverage is less than or equal to 10%, go to step 24;

Step 24: Determine whether the over-coverage degree of the adjacent cell is greater than the fourth threshold value, wherein the fourth threshold value can be specifically 10%, and when the over-coverage degree of the adjacent cell is greater than 10%, determine the downlink of the main cell to be tested The interference source is the over-coverage interference of adjacent cells, output the over-coverage adjacent cells, and adjust the transmit power, site height, antenna azimuth and/or downtilt angle to suppress interference; when the adjacent cell over-coverage is less than or equal to 10%, Then it is determined that the downlink interference source of the main cell to be tested is external interference or inter-system interference, and the interference source is checked by on-site frequency scanning.

The embodiments of the present invention analyze the MAC layer downlink block error rate, modulo three interference intensity, overlapping coverage and adjacent cell over-coverage in sequence to obtain specific reasons for the downlink interference problem, and provide corresponding optimization measures for each specific reason.

The embodiment of the present invention also provides an analysis device for LTE network downlink interference, as shown in FIG. 3 , including:

An acquisition module 31, configured to acquire network performance index KPI data information and network measurement report MR data information collected by terminals belonging to the primary cell to be tested;

The generating module 32 is used to obtain the modulus three interference intensity, overlapping coverage and adjacent cell over-coverage according to the MR data information, and obtain the media access control MAC layer downlink block error rate according to the KPI data information;

The analysis module 33 is used to compare and analyze the three-mode interference intensity, the overlapping coverage, the adjacent cell over-coverage and the downlink block error rate of the MAC layer with different thresholds, and draw the result Describe the downlink interference source of the primary cell to be tested.

In the device for analyzing downlink interference of an LTE network according to an embodiment of the present invention, the MR data information includes: the signal strength RSRP of the primary cell to be tested and the adjacent cell, the physical cell identifier PCI of the primary cell to be tested and the adjacent cell and the number of neighboring cells of the primary cell to be tested.

The analysis device of LTE network downlink interference of the embodiment of the present invention, described generation module 32 comprises:

A first acquiring unit, configured to acquire a first number of information satisfying a first preset condition from the MR data information according to the RSRP and PCI of the main cell to be tested and the neighboring cell, the first preset The condition is that the PCI module three of the primary cell to be tested is equal to the PCI module three of the neighboring cell and the difference between the RSRP of the primary cell to be tested and the RSRP of the neighboring cell is smaller than a first predetermined threshold;

The second acquiring unit is configured to acquire a second information number satisfying a second preset condition from the MR data information according to the RSRP of the primary cell to be tested and the RSRP of the neighboring cell, the second preset The condition is that the difference between the RSRP of the primary cell to be tested and the RSRP of the neighboring cell is smaller than a second predetermined threshold;

A first generating unit, configured to obtain the modulo three interference strength according to the first information number and the second information number.

The analysis device of LTE network downlink interference of the embodiment of the present invention, described generating module 32 comprises:

A third acquiring unit, configured to obtain from the MR data information that satisfies a third preset condition according to the RSRP of the primary cell to be tested, the RSRP of the neighboring cell, and the number of neighboring cells of the primary cell to be tested The third information number, wherein the third preset condition is that the difference between the RSRP of the main cell to be tested and the RSRP of the neighboring cell is less than the third predetermined threshold, and the number of neighboring cells is greater than or equal to the fourth predetermined threshold;

The second generating unit is configured to obtain the overlapping coverage according to the third information number and the total information number, wherein the total information number is a network measurement report MR collected by a terminal belonging to the primary cell to be measured The total number of data messages.

The analysis device of LTE network downlink interference of the embodiment of the present invention, described generating module 32 comprises:

A fourth obtaining unit, configured to obtain, from the MR data information, a fourth information number satisfying a fourth preset condition according to the RSRP of the primary cell to be tested and the RSRP of the neighboring cell, wherein the fourth The preset condition is that the difference between the RSRP of the primary cell to be tested and the RSRP of the neighboring cell is smaller than a fifth predetermined threshold;

A fifth acquiring unit, configured to acquire, from the MR data information, a fifth number of information satisfying a fifth preset condition according to the RSRP of the primary cell to be tested, wherein the fifth preset condition is the The measured RSRP of the primary cell is greater than the sixth predetermined threshold;

A third generating unit, configured to obtain the neighbor cell over-coverage degree according to the fourth information number and the fifth information number.

The analysis device of LTE network downlink interference of the embodiment of the present invention, described analysis module 33 comprises:

A first analyzing unit, configured to determine that the primary cell under test has no downlink interference if the MAC layer downlink block error rate is less than or equal to a first threshold;

The second analysis unit is configured to determine the downlink interference of the main cell to be tested if the downlink block error rate of the MAC layer is greater than the first threshold value and the modulo three interference intensity is greater than the second threshold value The source is the modulus three interference and outputs the modulo three interference neighboring cell;

A third analysis unit, configured to if the downlink block error rate of the MAC layer is greater than the first threshold, the modulo three interference intensity is less than or equal to the second threshold, and the overlapping coverage is greater than the third threshold value, then it is determined that the downlink interference source of the primary cell to be tested is overlapping coverage interference and output overlapping coverage adjacent cells;

A fourth analysis unit, configured to if the downlink block error rate of the MAC layer is greater than the first threshold value, the modulo three interference intensity is less than or equal to the second threshold value, and the overlapping coverage is less than or equal to The third preset value, and the neighbor cell over-coverage degree is greater than the fourth preset value, then determine that the downlink interference source of the main cell to be tested is the neighbor cell over-coverage interference and output the over-coverage neighbor cell; or

The fifth analysis unit is configured to: if the downlink block error rate of the MAC layer is greater than the first threshold value, the modulo three interference intensity is less than or equal to the second threshold value, and the overlapping coverage is less than or equal to The third preset value, and the neighbor cell over-coverage degree is less than or equal to the fourth preset value, then it is determined that the downlink interference source of the primary cell to be tested is external interference or inter-system interference.

The analysis device of the LTE network downlink interference of the embodiment of the present invention also includes:

A first adjustment module, configured to adjust PCI, transmit power, antenna azimuth and/or downtilt if the downlink interference source of the primary cell to be tested is modulo three interference;

A second adjustment module, configured to adjust inter-cell coordination power and/or coverage if the downlink interference source of the main cell to be tested is overlapping coverage interference;

The third adjustment module is configured to adjust the transmit power, site height, antenna azimuth and/or downtilt if the downlink interference source of the main cell to be tested is the over-coverage interference of adjacent cells; or

The fourth adjustment module is configured to perform on-site frequency scanning if the downlink interference source of the main cell to be tested is external interference or inter-system interference.

It should be noted that the device is a device corresponding to the above method embodiment, and all the implementation modes in the above method embodiment are applicable to the device embodiment, and can also achieve the same technical effect.

The embodiments of the present invention help network optimization personnel to more intuitively judge network downlink interference problems through network performance index KPI data information and network measurement report MR data information, clearly analyze downlink interference problems, and provide optimization suggestions at the same time.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (14)

1. the analysis method of the descending interference of LTE network, it is characterised in that including:

Obtain network performance index KPI data information and belong to the Network Measurement Report MR data message that the terminal of main plot to be measured gathers；

According to described MR data message, obtain mould three interference strength, overlapping coverage and adjacent area and cross coverage, and according to described KPI data information, obtain the descending Block Error Rate of media interviews mac layer；

By described mould three interference strength, described overlapping coverage, described adjacent area crosses coverage and the descending Block Error Rate of described MAC layer compares analysis from different threshold values respectively, draws the down interference source of described main plot to be measured.

2. the analysis method of the descending interference of LTE network according to claim 1, it is characterized in that, described MR data message includes: the Physical Cell Identifier PCI of the signal intensity RSRP of described main plot to be measured and adjacent cell, described main plot to be measured and described adjacent cell and the adjacent cell number of described main plot to be measured.

3. the analysis method of the descending interference of LTE network according to claim 2, it is characterised in that according to described MR data message, obtain the step of mould three interference strength, specifically include:

RSRP and PCI according to described main plot to be measured and described adjacent cell, obtaining in described MR data message and meet the first pre-conditioned first information number, the described first pre-conditioned PCI mould three for the described main plot to be measured difference equal to the PCI mould three of described adjacent cell and the RSRP of described the main plot to be measured and RSRP of described adjacent cell is less than the first predetermined threshold；

RSRP according to described the main plot to be measured and RSRP of described adjacent cell, obtaining in described MR data message and meet second the second pre-conditioned Information Number, the difference of the described second pre-conditioned RSRP for described the main plot to be measured and RSRP of described adjacent cell is less than the second predetermined threshold；

According to described first information number and described second Information Number, obtain described mould three interference strength.

4. the analysis method of the descending interference of LTE network according to claim 2, it is characterised in that according to described MR data message, obtain the step of overlapping coverage, specifically include:

Adjacent cell number according to the RSRP of described main plot to be measured, the RSRP of described adjacent cell and described main plot to be measured, described MR data message obtains and meets the 3rd the 3rd pre-conditioned Information Number, wherein, the difference of the described 3rd pre-conditioned RSRP for described the main plot to be measured and RSRP of described adjacent cell is less than the 3rd predetermined threshold, and adjacent cell number is be more than or equal to the 4th predetermined threshold；

According to described 3rd Information Number and total information number, obtaining described overlapping coverage, wherein, described total information number is the sum of the Network Measurement Report MR data message of the terminal collection belonging to described main plot to be measured.

5. the analysis method of the descending interference of LTE network according to claim 2, it is characterised in that according to described MR data message, obtains adjacent area and crosses the step of coverage, specifically include:

RSRP according to described the main plot to be measured and RSRP of described adjacent cell, described MR data message obtains and meets the 4th the 4th pre-conditioned Information Number, wherein, the described 4th pre-conditioned RSRP for described main plot to be measured and the difference of the RSRP of described adjacent cell are less than the 5th predetermined threshold；

RSRP according to described main plot to be measured, obtains in described MR data message and meets the 5th the 5th pre-conditioned Information Number, and wherein, the described 5th pre-conditioned RSRP for described main plot to be measured is more than the 6th predetermined threshold；

According to described 4th Information Number and described 5th Information Number, obtain described adjacent area and cross coverage.

6. the analysis method of the descending interference of LTE network according to claim 1, it is characterized in that, described by described mould three interference strength, described overlapping coverage, described adjacent area crosses coverage and the descending Block Error Rate of described MAC layer compares from different threshold values respectively, draw the step of the down interference source of described main plot to be measured, specifically include:

If the descending Block Error Rate of described MAC layer is less than or equal to the first threshold value, it is determined that described main plot to be measured is without descending interference；

If the descending Block Error Rate of described MAC layer is more than described first threshold value, and described mould three interference strength is more than the second threshold value, it is determined that the down interference source of described main plot to be measured is that mould three disturbs and exports mould three and disturbs adjacent area；

If the descending Block Error Rate of described MAC layer is more than described first threshold value, described mould three interference strength less than or equal to described second threshold value and described overlapping coverage more than the 3rd threshold value, it is determined that the down interference source of described main plot to be measured is attached most importance to folded cover jamming export and overlapping cover adjacent area；

If the descending Block Error Rate of described MAC layer is more than described first threshold value, described mould three interference strength is less than or equal to described second threshold value, described overlapping coverage is less than or equal to described 3rd preset value, and described adjacent area crosses coverage more than the 4th preset value, it is determined that the down interference source of described main plot to be measured is that adjacent cell is crossed cover jamming and exported covering adjacent area；Or

If the descending Block Error Rate of described MAC layer is more than described first threshold value, described mould three interference strength is less than or equal to described second threshold value, described overlapping coverage is less than or equal to described 3rd preset value, and described adjacent area crosses coverage less than or equal to described 4th preset value, it is determined that the down interference source of described main plot to be measured is external disturbance or different system interference.

7. the analysis method of the descending interference of LTE network according to claim 1, it is characterized in that, described by described mould three interference strength, described overlapping coverage, described adjacent area crosses coverage and the described community descending Block Error Rate of MAC layer compares analysis from different threshold values respectively, after drawing the step of down interference source of described main plot to be measured, described method also includes:

If the down interference source of described main plot to be measured is mould three interference, then PCI, transmitting power, antenna azimuth and/or angle of declination are adjusted；

The folded cover jamming if the down interference source of described main plot to be measured is attached most importance to, then be adjusted the collaborative power in minizone and/or coverage；

If the down interference source of described main plot to be measured is adjacent cell crosses cover jamming, then transmitting power, website height, antenna azimuth and/or angle of declination are adjusted；Or

If the down interference source of described main plot to be measured is external disturbance or different system interference, then carry out on-the-spot frequency sweep.

8. the analytical equipment of the descending interference of LTE network, it is characterised in that including:

Acquisition module, for obtaining network performance index KPI data information and belonging to the Network Measurement Report MR data message that the terminal of main plot to be measured gathers；

Generation module, for according to described MR data message, obtaining mould three interference strength, overlapping coverage and adjacent area and cross coverage, and according to described KPI data information, obtain the descending Block Error Rate of media interviews mac layer；

Analysis module, for by described mould three interference strength, described overlapping coverage, described adjacent area crosses coverage and the descending Block Error Rate of described MAC layer compares analysis from different threshold values respectively, draws the down interference source of described main plot to be measured.

9. the analytical equipment of the descending interference of LTE network according to claim 8, it is characterized in that, described MR data message includes: the Physical Cell Identifier PCI of the signal intensity RSRP of described main plot to be measured and adjacent cell, described main plot to be measured and described adjacent cell and the adjacent cell number of described main plot to be measured.

10. the analytical equipment of the descending interference of LTE network according to claim 9, it is characterised in that described generation module includes:

First acquiring unit, for RSRP and PCI according to described main plot to be measured and described adjacent cell, obtaining in described MR data message and meet the first pre-conditioned first information number, the described first pre-conditioned PCI mould three for the described main plot to be measured difference equal to the PCI mould three of described adjacent cell and the RSRP of described the main plot to be measured and RSRP of described adjacent cell is less than the first predetermined threshold；

Second acquisition unit, RSRP for the RSRP according to described main plot to be measured and described adjacent cell, obtaining in described MR data message and meet second the second pre-conditioned Information Number, the difference of the described second pre-conditioned RSRP for described the main plot to be measured and RSRP of described adjacent cell is less than the second predetermined threshold；

First generates unit, for according to described first information number and described second Information Number, obtaining described mould three interference strength.

11. the analytical equipment of the descending interference of LTE network according to claim 9, it is characterised in that described generation module includes:

3rd acquiring unit, for the adjacent cell number according to the RSRP of described main plot to be measured, the RSRP of described adjacent cell and described main plot to be measured, described MR data message obtains and meets the 3rd the 3rd pre-conditioned Information Number, wherein, the difference of the described 3rd pre-conditioned RSRP for described the main plot to be measured and RSRP of described adjacent cell is less than the 3rd predetermined threshold, and adjacent cell number is be more than or equal to the 4th predetermined threshold；

Second generates unit, and for according to described 3rd Information Number and total information number, obtaining described overlapping coverage, wherein, described total information number is the sum of the Network Measurement Report MR data message of the terminal collection belonging to described main plot to be measured.

12. the analytical equipment of the descending interference of LTE network according to claim 9, it is characterised in that described generation module includes:

4th acquiring unit, RSRP for the RSRP according to described main plot to be measured and described adjacent cell, described MR data message obtains and meets the 4th the 4th pre-conditioned Information Number, wherein, the described 4th pre-conditioned RSRP for described main plot to be measured and the difference of the RSRP of described adjacent cell are less than the 5th predetermined threshold；

5th acquiring unit, for the RSRP according to described main plot to be measured, obtains in described MR data message and meets the 5th the 5th pre-conditioned Information Number, and wherein, the described 5th pre-conditioned RSRP for described main plot to be measured is more than the 6th predetermined threshold；

3rd generates unit, for according to described 4th Information Number and described 5th Information Number, obtaining described adjacent area and cross coverage.

13. the analytical equipment of the descending interference of LTE network according to claim 8, it is characterised in that described analysis module includes:

First analytic unit, if for the descending Block Error Rate of described MAC layer less than or equal to the first threshold value, it is determined that described main plot to be measured is without descending interference；

Second analytic unit, if for the descending Block Error Rate of described MAC layer more than described first threshold value, and described mould three interference strength is more than the second threshold value, it is determined that the down interference source of described main plot to be measured is that mould three disturbs and exports mould three and disturbs adjacent area；

3rd analytic unit, if for the descending Block Error Rate of described MAC layer more than described first threshold value, described mould three interference strength less than or equal to the second threshold value and described overlapping coverage more than the 3rd threshold value, it is determined that the down interference source of described main plot to be measured is attached most importance to folded cover jamming export and overlapping cover adjacent area；

4th analytic unit, if for the descending Block Error Rate of described MAC layer more than described first threshold value, described mould three interference strength is less than or equal to described second threshold value, described overlapping coverage is less than or equal to described 3rd preset value, and described adjacent area crosses coverage more than the 4th preset value, it is determined that the down interference source of described main plot to be measured is that adjacent cell is crossed cover jamming and exported covering adjacent area；Or

5th analytic unit, if for the descending Block Error Rate of described MAC layer more than described first threshold value, described mould three interference strength is less than or equal to described second threshold value, described overlapping coverage is less than or equal to described 3rd preset value, and described adjacent area crosses coverage less than or equal to described 4th preset value, it is determined that the down interference source of described main plot to be measured is external disturbance or different system interference.

14. the analytical equipment of the descending interference of LTE network according to claim 8, it is characterised in that also include:

First adjusting module, if the down interference source for described main plot to be measured is mould three interference, is then adjusted PCI, transmitting power, antenna azimuth and/or angle of declination；

Second adjusting module, the folded cover jamming if the down interference source being used for described main plot to be measured is attached most importance to, then the collaborative power in minizone and/or coverage are adjusted；

3rd adjusting module, if the down interference source for described main plot to be measured is that adjacent cell crosses cover jamming, is then adjusted transmitting power, website height, antenna azimuth and/or angle of declination；Or

4th adjusting module, if the down interference source for described main plot to be measured is external disturbance or different system interference, then carries out on-the-spot frequency sweep.