A method and device for screening key poor-quality plots and a readable storage medium

Abstract

The application provides a method, device and readable storage medium for screening key poor-quality cells, the method comprising: dividing end-to-end bill record into long term evolution voice bearer (VOLTE) voice service, new radio voice (VoNR) voice service and evolved packet circuit domain fallback (EPS FB) voice service; performing cell dimension voice service index statistical analysis by day for each type of voice service, and screening out poor-quality cells that appear in poor-quality condition on a single day; and performing sliding window monitoring on the poor-quality cells to obtain key poor-quality cells. The method, device and readable storage medium can solve the problem that normal cells are misjudged as poor-quality cells in the existing method for screening poor-quality cells.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of network, and particularly relates to a method and device for screening key poor-quality cells and a readable storage medium. BACKGROUND

[0002] With continuous optimization of the network, the overall quality of the network has been significantly improved, and network optimization construction has entered the stage of small division and local targeted optimization, and accurate screening of poor-quality cells begins to play an important role. At the same time, due to the complexity of the mobile communication environment, there are situations where some normal cells are misjudged as poor-quality cells due to sudden reasons such as data abnormalities or terminal abnormalities. SUMMARY

[0003] The present application solves the technical problem of the prior art, and provides a method and device for screening key poor-quality cells and a readable storage medium to solve the problem that normal cells are misjudged as poor-quality cells in the prior art.

[0004] In a first aspect, the present application provides a method for screening key poor-quality cells, comprising:

[0005] dividing end-to-end call record into voice over long term evolution (VOLTE) voice service, voice over new radio (VoNR) voice service and evolved packet circuit domain fallback (EPS FB) voice service;

[0006] statistically analyzing the voice service indicators of each type of voice service in a cell dimension by day, and screening poor-quality cells that appear poor-quality conditions on a single day;

[0007] monitoring the poor-quality cells by a sliding window to obtain key poor-quality cells.

[0008] Further, before the end-to-end call record is divided into voice over long term evolution (VOLTE) voice service, voice over new radio (VoNR) voice service and evolved packet circuit domain fallback (EPS FB) voice service, the method further comprises:

[0009] collecting external data representation (XDR) data in a specified area within a preset time period;

[0010] cleaning the collected XDR data;

[0011] associating the cleaned XDR data according to the voice service signaling flow of VOLTE, EPS FB and VoNR to form the end-to-end call record.

[0012] Further, the statistical analysis of the voice service indicators of each type of voice service in a cell dimension by day to screen poor-quality cells that appear poor-quality conditions on a single day specifically comprises:

[0013] For VOLTE voice service and VoNR voice service, the network access rate, call drop rate, and average call setup time are analyzed on a daily basis in a cell dimension, and a poor quality cell with poor quality on a single day is screened out.

[0014] For EPS FB voice service, the network access rate, call drop rate, average call setup time, and average fallback time are analyzed on a daily basis in a cell dimension, and a poor quality cell with poor quality on a single day is screened out.

[0015] Further, the method further comprises:

[0016] The network quality is divided into two levels of excellent and ordinary;

[0017] For each type of voice service, different poor quality thresholds are set for the excellent and ordinary levels.

[0018] Further, if the network quality of the existing network is excellent, and the voice service indicators of the VOLTE voice service and the VoNR voice service satisfy at least one of the following conditions, it is defined as a poor quality cell:

[0019] The network access rate is less than a first network access rate poor quality threshold;

[0020] The call drop rate is greater than a first call drop rate poor quality threshold;

[0021] The average call setup time is greater than a first average call setup time poor quality threshold;

[0022] If the network quality of the existing network is ordinary, and the voice service indicators of the VOLTE voice service and the VoNR voice service satisfy at least one of the following conditions, it is defined as a poor quality cell:

[0023] The network access rate is less than a second network access rate poor quality threshold;

[0024] The call drop rate is greater than a second call drop rate poor quality threshold;

[0025] The average call setup time is greater than a second average call setup time poor quality threshold;

[0026] Wherein, the first network access rate poor quality threshold is greater than the second network access rate poor quality threshold, the first call drop rate poor quality threshold is less than the second call drop rate poor quality threshold, and the first average call setup time poor quality threshold is less than the second average call setup time poor quality threshold.

[0027] Further, the first network access rate quality difference threshold is 99%, the second network access rate quality difference threshold is 98%, the first call drop rate quality difference threshold is 0.05%, the second call drop rate quality difference threshold is 0.1%, the first average call setup time quality difference threshold is 3400ms, and the second average call setup time quality difference threshold is 4000ms.

[0028] Further, if the network quality of the existing network is excellent, and the voice service indicators of the EPS FB voice service satisfy at least one of the following, the cell is defined as a quality difference cell:

[0029] The network access rate is less than a third network access rate quality difference threshold;

[0030] The call drop rate is greater than a third call drop rate quality difference threshold;

[0031] The average call setup time is greater than a third average call setup time quality difference threshold;

[0032] The average fallback time is greater than a first average fallback time quality difference threshold;

[0033] If the network quality of the existing network is ordinary, and the voice service indicators of the EPS FB voice service satisfy at least one of the following, the cell is defined as a quality difference cell:

[0034] The network access rate is less than a fourth network access rate quality difference threshold;

[0035] The call drop rate is greater than a fourth call drop rate quality difference threshold;

[0036] The average call setup time is greater than a fourth average call setup time quality difference threshold;

[0037] The average fallback time is greater than a second average fallback time quality difference threshold;

[0038] The third network access rate quality difference threshold is greater than the fourth network access rate quality difference threshold, the third call drop rate quality difference threshold is less than the fourth call drop rate quality difference threshold, the third average call setup time quality difference threshold is less than or equal to the fourth average call setup time quality difference threshold, and the first average fallback time quality difference threshold is less than or equal to the second average fallback time quality difference threshold.

[0039] Further, the third network access rate quality difference threshold is 99%, the fourth network access rate quality difference threshold is 98%, the third call drop rate quality difference threshold is 0.05%, the fourth call drop rate quality difference threshold is 0.1%, the third average call setup time quality difference threshold and the fourth average call setup time quality difference threshold are 5000ms, and the first average fallback time quality difference threshold and the second average fallback time quality difference threshold are 1400ms.

[0040] Further, the sliding window monitoring of the poor quality cell obtains a key poor quality cell, and specifically includes:

[0041] For each type of voice service, a preset time length is used as a sliding window to continuously monitor the voice service indicators of the poor quality cell.

[0042] If the continuous monitoring result of the poor quality cell meets a preset judgment condition of a key poor quality cell, the poor quality cell is determined as the key poor quality cell.

[0043] Further, the method includes:

[0044] The dispatching information for optimizing the key poor quality cell is issued.

[0045] Further, the key poor quality cell includes a network access rate key poor quality cell and a call drop rate key poor quality cell, and after the sliding window monitoring of the poor quality cell obtains the key poor quality cell, the method further includes:

[0046] In combination with wireless PM data, the network access rate key poor quality cell and the call drop rate key poor quality cell are verified to obtain a list of verified key poor quality cells.

[0047] Further, the combination of wireless PM data, the verification of the network access rate key poor quality cell and the call drop rate key poor quality cell to obtain the list of verified key poor quality cells specifically includes:

[0048] According to the wireless PM data, an evolved radio access bearer (E-RAB) establishment success rate of the network access rate key poor quality cell and a voice service drop rate of the call drop rate key poor quality cell are obtained.

[0049] If the E-RAB establishment success rate of the network access rate key poor quality cell is lower than a preset first threshold value, the network access rate key poor quality cell is added to the list of key poor quality cells.

[0050] If the voice service drop rate of the call drop rate key poor quality cell is higher than a preset second threshold value, the call drop rate key poor quality cell is added to the list of key poor quality cells.

[0051] In a second aspect, the application provides a device for screening a key poor quality cell, which includes:

[0052] A voice service separation module is configured to separate end-to-end call records into a voice over long term evolution (VOLTE) voice service, a voice over new radio (VoNR) voice service, and an evolved packet circuit domain fallback (EPS FB) voice service.

[0053] The statistical analysis module, connected to the voice service separation module, is used to perform statistical analysis of voice service indicators at the cell level for each type of voice service on a daily basis, and to screen out the poor-quality cells that have poor quality on a single day.

[0054] The key poor-quality cell module is connected to the statistical analysis module and is used to perform sliding window monitoring on the poor-quality cells to identify key poor-quality cells.

[0055] Thirdly, the present invention provides an apparatus for screening key poor-quality cells, comprising a memory and a processor, wherein the memory stores a computer program, and the processor is configured to run the computer program to implement the method for screening key poor-quality cells described in the first aspect above.

[0056] Fourthly, the present invention provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the method for screening key poor-quality cells as described in the first aspect.

[0057] The present invention provides a method, apparatus, and readable storage medium for screening key poor-quality cells. First, end-to-end call detail records (CDRs) are categorized into Long Term Evolution (LTE) Voice over LTE (VoLTE) voice services, New Radio (VoNR) voice services, and Evolved Packet Circuit Fallback (EPSFB) voice services. Then, for each type of voice service, daily statistical analysis of cell-level voice service indicators is performed to screen out poor-quality cells exhibiting poor quality on a single day. Finally, sliding window monitoring is applied to these poor-quality cells to identify key poor-quality cells. This invention, targeting voice services, uses cell-level voice service indicators to screen out poor-quality cells, and then combines this with sliding window monitoring to screen out key poor-quality cells for voice services. This improves the accuracy of locating key poor-quality cells, avoids misjudgments due to data anomalies or terminal issues, and solves the problem of existing methods for screening poor-quality cells misidentifying normal cells as poor-quality cells. Attached Figure Description

[0058] Figure 1 This is a flowchart of a method for screening key poor-quality cells according to Embodiment 1 of the present invention;

[0059] Figure 2 This is a schematic diagram of the structure of a device for screening key poor-quality residential areas according to Embodiment 2 of the present invention;

[0060] Figure 3 This is a schematic diagram of a device for screening key poor-quality communities according to Embodiment 3 of the present invention. Detailed Implementation

[0061] In order to enable a person skilled in the art to better understand the technical solutions of the present application, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0062] It can be understood that the specific embodiments and drawings described herein are merely used to explain the present application, but not to limit the present application.

[0063] It can be understood that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0064] It can be understood that, for the convenience of description, only parts related to the present application are shown in the drawings of the present application, and parts unrelated to the present application are not shown in the drawings.

[0065] It can be understood that each unit and module involved in the embodiments of the present application can correspond to only one entity structure, or can be composed of multiple entity structures, or multiple units and modules can be integrated into one entity structure.

[0066] It can be understood that, without conflict, the functions and steps marked in the flowcharts and block diagrams of the present application can occur in an order different from that marked in the drawings.

[0067] It can be understood that, in the flowcharts and block diagrams of the present application, the architecture, functions and operations of possible implementations of the system, device, equipment and method according to the embodiments of the present application are shown. Each block in the flowchart or block diagram can represent a unit, module, program segment, code, which contains executable instructions for realizing the specified functions. Moreover, each block or combination of blocks in the block diagram and flowchart can be realized by a hardware-based system for realizing the specified functions, or by a combination of hardware and computer instructions.

[0068] It can be understood that the units and modules involved in the embodiments of the present application can be realized in the form of software or hardware, for example, the units and modules can be located in a processor.

[0069] Embodiment 1:

[0070] The embodiment provides a method for screening key poor-quality cells, as shown in the following formula (I), the method comprises the following steps: Figure 1

[0071] Step S101: Dividing end-to-end bill records into VOLTE (Voice over Long-Term Evolution, voice over long-term evolution) voice service, VoNR (Voice Over New Radio, voice over new radio) voice service and EPS FB (EPS Fallback, evolved packet circuit domain fallback) voice service. ​

[0072] In the embodiment, the voice service is divided into three types of voice service VOLTE, VoNR and EPS FB, and the data source can be obtained by subscribing to XDR (External Data Representation) data in the XDR bill storage system, and an end-to-end bill record is obtained.

[0073] Specifically, if the user completes initial registration in the EPC (Evolved Packet Core, 4G core network) domain and completes a voice call in the IMS (IP Multimedia Subsystem, multimedia subsystem) domain, this bill is the bill corresponding to the VOLTE voice service; if the user completes initial registration in the 5GC (5G Core, 5G core network) domain and completes a voice call in the IMS domain, this bill is the bill corresponding to the VoNR voice service; if the user completes initial registration in the 5GC domain, falls back to the EPC domain after initiating a voice call, and then completes a voice call in the IMS domain, this bill is the bill corresponding to the EPS FB voice service.

[0074] Optionally, before the end-to-end bill record is divided into the long-term evolution voice bearer VOLTE voice service, the new radio voice VoNR voice service, and the evolved packet circuit domain fallback EPS FB voice service, the method further comprises:

[0075] Collecting external data representation XDR data in a specified area within a preset time period;

[0076] Cleaning the collected XDR data;

[0077] Correlating the cleaned XDR data according to the VOLTE, EPS FB, and VoNR voice service signaling processes to form the end-to-end bill record.

[0078] In the embodiment, the specified area is an area (province, city) that needs to be screened for poor quality cells and improve network quality, and the preset time period is, for example, the last N days. Specifically, the system can periodically transmit IMS, 5GC, and EPC domain XDR data in the specified area for the last N days (N≥5) to the XDR bill storage system to realize automatic data collection, then clean the collected XDR data to remove bad data, and finally correlate the IMS, 5GC, and EPC domain XDR data to form an end-to-end record bill for a user's voice call according to the VOLTE, EPS FB, and VoNR voice service signaling processes.

[0079] Step S102: For each type of voice service, perform cell-dimension voice service index statistical analysis by day to screen out poor quality cells that appear in poor quality conditions on a single day.

[0080] Specifically, the network access rate, call drop rate, and average call setup time of each cell are analyzed by day for VOLTE voice services and VoNR voice services, and the cells with poor quality in a single day are screened out; the network access rate, call drop rate, average call setup time, and average fallback time of each cell are analyzed by day for EPS FB voice services, and the cells with poor quality in a single day are screened out.

[0081] In this embodiment, the voice service indicators of each type of voice service are counted by day for each cell, and the specific voice service indicators include:

[0082] (a) VOLTE voice service network access rate, call drop rate, and average call setup time;

[0083] (b) VoNR voice service network access rate, call drop rate, and average call setup time;

[0084] (c) EPS FB voice service network access rate, call drop rate, average call setup time, and average fallback time.

[0085] Wherein, the voice service indicator definitions are shown in Table 1:

[0086] Table 1: Voice service indicator definitions

[0087]

[0088] Specifically, the calculation formula of the network access rate is as follows:

[0089] Network access rate = number of voice ring times / number of voice call times.

[0090] Specifically, the calculation formula of the call drop rate is as follows:

[0091] Call drop rate = total number of call drops during user conversation / total number of user responses.

[0092] Specifically, the calculation formula of the average call setup time is as follows:

[0093] Average call setup time = total call setup time / total number of successful call setups.

[0094] Wherein, the total call setup time is the sum of the time from the user initiating a call to the user hearing the ring in a period of time; the number of successful call setups is the number of times from the user initiating a call to the user hearing the ring in a period of time.

[0095] Specifically, the calculation formula of the average fallback time is as follows:

[0096] Average fallback time = total fallback time / total number of successful fallbacks.

[0097] The total back-falling duration is the total duration of time that the EPS FB voice service user receives a 5G-to-4G handover request initiated by a gNB (a 5G base station) from an AMF (Access and Mobility Management Function) and initiates a TAU Request message to the 4G network carrying a redirection or back-falling reason value within a period of time.

[0098] The total back-falling success times are the times of initiating a TAU Request message to the 4G network after the EPS FB voice service user successfully back falls within a period of time.

[0099] In this embodiment, the VOLTE voice service is analyzed in terms of network access rate, call drop rate and average call setup delay on a daily basis and on a cell basis, so as to obtain the VOLTE voice service indicators of each cell on a daily basis; the VoNR voice service is analyzed in terms of network access rate, call drop rate and average call setup delay on a daily basis and on a cell basis, so as to obtain the VoNR voice service indicators of each cell on a daily basis; and the EPS FB voice service is analyzed in terms of network access rate, call drop rate, average call setup delay and average back-falling delay on a daily basis and on a cell basis, so as to obtain the EPS FB voice service indicators of each cell on a daily basis.

[0100] Optionally, the method further comprises:

[0101] dividing the network quality into two levels of excellent and ordinary;

[0102] setting different quality difference thresholds for each type of voice service according to the two levels of excellent and ordinary.

[0103] In this embodiment, the network quality of the existing network is divided into two levels of excellent and ordinary, and then two quality difference threshold standards of voice service quality difference cells are set for each type of voice service.

[0104] Optionally, if the network quality of the existing network is excellent, and the voice service indicators of the VOLTE voice service and the VoNR voice service satisfy at least one of the following conditions, the cell is defined as a voice service quality difference cell:

[0105] the network access rate is less than a first network access rate quality difference threshold;

[0106] the call drop rate is greater than a first call drop rate quality difference threshold;

[0107] the average call setup delay is greater than a first average call setup delay quality difference threshold value;

[0108] If the network quality of the existing network is ordinary, and the voice service indicators of the VOLTE voice service and the VoNR voice service satisfy at least one of the following conditions, the cell is defined as a quality difference cell:

[0109] The network access rate is less than a second network access rate quality difference threshold value;

[0110] The call drop rate is greater than a second call drop rate quality difference threshold value;

[0111] The average call setup delay is greater than a second average call setup delay quality difference threshold value;

[0112] The first network access rate quality difference threshold value is greater than the second network access rate quality difference threshold value, the first call drop rate quality difference threshold value is less than the second call drop rate quality difference threshold value, and the first average call setup delay quality difference threshold value is less than the second average call setup delay quality difference threshold value.

[0113] In the embodiment, the quality difference threshold values corresponding to the VOLTE voice service and the VoNR voice service can be the same or different, and preferably the same quality difference threshold value is used, and each quality difference threshold value can be pre-set according to actual conditions.

[0114] Optionally, the first network access rate quality difference threshold value is preferably set to 99%, the second network access rate quality difference threshold value is preferably set to 98%, the first call drop rate quality difference threshold value is preferably set to 0.05%, the second call drop rate quality difference threshold value is preferably set to 0.1%, the first average call setup delay quality difference threshold value is preferably set to 3400ms, and the second average call setup delay quality difference threshold value is preferably set to 4000ms.

[0115] In the embodiment, the VOLTE voice service and VoNR voice service poor quality cell threshold can be as shown in Table 2. When the network quality of the VOLTE or VoNR voice service network access rate in the existing network is less than 99%, the VOLTE or VoNR voice service network access rate is defined as a poor quality cell. When the network quality of the VOLTE or VoNR voice service call drop rate in the existing network is greater than 0.05%, the VOLTE or VoNR voice service call drop rate is defined as a poor quality cell. When the network quality of the VOLTE or VoNR voice service average call setup time in the existing network is greater than 3400ms, the VOLTE or VoNR voice service average call setup time is defined as a poor quality cell. Correspondingly, when the network quality of the VOLTE or VoNR voice service in the existing network is ordinary, the VOLTE or VoNR voice service poor quality cell screening process refers to the above network quality excellent area in the existing network, and the poor quality threshold is relaxed to network access rate <98%, call drop rate >0.1%, and average call setup time >4000ms.

[0116] Table 2: VOLTE voice service and VoNR voice service poor quality cell threshold

[0117]

[0118] It should be noted that the combination of the above three poor quality cells is referred to as a VOLTE or VoNR voice service poor quality cell. That is, the VOLTE or VoNR voice service poor quality cell includes: network access rate poor quality cell, call drop rate poor quality cell, and average call setup time poor quality cell. Among the three poor quality cells, the cell with two or three indicators simultaneously poor quality can be preferentially focused on, and is defined as a VOLTE or VoNR voice service preferentially focused poor quality cell.

[0119] Optionally, if the network quality of the existing network is excellent, and the voice service indicators of the EPS FB voice service satisfy at least one of the following, the cell is defined as a poor quality cell:

[0120] The network access rate is less than a third network access rate poor quality threshold;

[0121] The call drop rate is greater than a third call drop rate poor quality threshold;

[0122] The average call setup time is greater than a third average call setup time poor quality threshold;

[0123] The average fallback time is greater than a first average fallback time poor quality threshold;

[0124] If the network quality of the existing network is ordinary, and the voice service indicators of the EPS FB voice service satisfy at least one of the following, the cell is defined as a poor quality cell:

[0125] The network access rate is less than a fourth network access rate quality difference threshold value;

[0126] The call drop rate is greater than a fourth call drop rate quality difference threshold value;

[0127] The average call setup time delay is greater than a fourth average call setup time delay quality difference threshold value;

[0128] The average fallback time delay is greater than a second average fallback time delay quality difference threshold value;

[0129] The third network access rate quality difference threshold value is greater than the fourth network access rate quality difference threshold value, the third call drop rate quality difference threshold value is less than the fourth call drop rate quality difference threshold value, the third average call setup time delay quality difference threshold value is less than or equal to the fourth average call setup time delay quality difference threshold value, and the first average fallback time delay quality difference threshold value is less than or equal to the second average fallback time delay quality difference threshold value.

[0130] Specifically, the third network access rate quality difference threshold value is preferably set to 99%, the fourth network access rate quality difference threshold value is preferably set to 98%, the third call drop rate quality difference threshold value is preferably set to 0.05%, the fourth call drop rate quality difference threshold value is preferably set to 0.1%, the third average call setup time delay quality difference threshold value and the fourth average call setup time delay quality difference threshold value are preferably set to 5000ms, and the first average fallback time delay quality difference threshold value and the second average fallback time delay quality difference threshold value are preferably set to 1400ms.

[0131] In the embodiment, the EPS FB voice service quality difference cell threshold value can be as shown in Table 3. When the network quality of an excellent area in the existing network is less than 99% for the EPS FB voice service network access rate, the area is defined as an EPS FB voice service network access rate quality difference cell. When the network quality of an excellent area in the existing network is greater than 0.05% for the EPS FB voice service call drop rate, the area is defined as an EPS FB voice service call drop rate quality difference cell. When the network quality of an excellent area in the existing network is greater than 5000ms for the EPS FB voice service average call setup time delay, the area is defined as an EPS FB voice service average call setup time delay quality difference cell. When the network quality of an excellent area in the existing network is greater than 1400ms for the EPS FB voice service average fallback time delay, the area is defined as an EPS FB voice service average fallback time delay quality difference cell. Correspondingly, when the network quality of an ordinary area in the existing network is less than 98% for the network access rate, greater than 0.1% for the call drop rate, and the average call setup time delay and the average fallback time delay remain unchanged, the EPS FB voice service quality difference cell screening process refers to the above-mentioned network quality of an excellent area in the existing network.

[0132] Table 3: EPS FB voice service quality difference cell threshold value

[0133]

[0134] It should be noted that the four kinds of quality difference cells are collectively referred to as EPS FB voice service quality difference cells. That is, the EPS FB voice service quality difference cells include: network access rate quality difference cells, call drop rate quality difference cells, average call setup time quality difference cells, and average fallback time quality difference cells. Among the four kinds of quality difference cells, the cells in which two or three or four indicators are simultaneously poor can be prioritized and defined as EPS FB voice service priority quality difference cells.

[0135] Step S103: Sliding window monitoring is performed on the quality difference cell to obtain a key quality difference cell.

[0136] Specifically: In order to accurately locate the voice service quality difference cell and avoid false judgments caused by sudden abnormalities or terminal problems, for each type of voice service, a preset time length is used as a sliding window to continuously monitor the voice service indicators of the quality difference cell. If the continuous monitoring result of the quality difference cell meets the preset judgment condition of the key quality difference cell, the quality difference cell is determined to be a key quality difference cell.

[0137] In this embodiment, the preset time length can be set to 5 days, and the judgment condition of the key quality difference cell can be set to when the voice service indicators of a quality difference cell appear 3 or more quality difference situations within 5 days, the quality difference cell is defined as a key quality difference cell.

[0138] Specifically, for VOLTE or VoNR voice service quality difference cells, a 5-day sliding window is used to continuously monitor the VOLTE or VoNR voice service indicators of each quality difference cell. When the network access rate of a quality difference cell appears 3 or more quality difference situations within 5 days, the quality difference cell is defined as a VOLTE or VoNR voice service network access rate key quality difference cell. When the call drop rate of a quality difference cell appears 3 or more quality difference situations within 5 days, the quality difference cell is defined as a VOLTE or VoNR voice service call drop rate key quality difference cell. When the average call setup time of a quality difference cell appears 3 or more quality difference situations within 5 days, the quality difference cell is defined as a VOLTE or VoNR voice service average call setup time key quality difference cell. The combination of the above three kinds of key quality difference cells is referred to as a VOLTE or VoNR voice service key quality difference cell.

[0139] Correspondingly, for the EPS FB voice service poor quality cell, a 5-day sliding window is used to continuously monitor the EPS FB voice service index of each poor quality cell. When a poor quality cell network access rate appears 3-day or more poor quality within 5 days, it is defined as an EPS FB voice service network access rate key poor quality cell. When a poor quality cell drop rate appears 3-day or more poor quality within 5 days, it is defined as an EPS FB voice service drop rate key poor quality cell. When a poor quality cell average call setup time appears 3-day or more poor quality within 5 days, it is defined as an EPS FB voice service average call setup time key poor quality cell. When a poor quality cell average fallback time appears 3-day or more poor quality within 5 days, it is defined as an EPS FB voice service average fallback time key poor quality cell. The four kinds of key poor quality cells are collectively referred to as EPS FB voice service key poor quality cells.

[0140] Optionally, the key poor quality cell includes a network access rate key poor quality cell and a drop rate key poor quality cell. After the sliding window monitoring of the poor quality cell to obtain the key poor quality cell, the method further includes:

[0141] In combination with wireless PM data, the network access rate key poor quality cell and the drop rate key poor quality cell are verified to obtain a verified key poor quality cell list.

[0142] In this embodiment, according to the difference of voice service types, the key poor quality cell can include a network access rate key poor quality cell, a drop rate key poor quality cell, an average call setup time key poor quality cell, and an average fallback time key poor quality cell. In order to further verify the accuracy of the key poor quality cell judgment, wireless PM data can be combined for verification.

[0143] It should be noted that since wireless PM data can only count voice service access and retention, and can only output access indicators and drop indicators, the verification of this step is only for the network access rate key poor quality cell and the drop rate key poor quality cell, and the average call setup time key poor quality cell and the average fallback time key poor quality cell cannot be verified, which also reflects the diversity and irreplaceability of XDR data.

[0144] Optionally, the verification of the network access rate key poor quality cell and the drop rate key poor quality cell in combination with wireless PM data to obtain a verified key poor quality cell list specifically includes:

[0145] According to the wireless PM data, the E-RAB (Evolved Radio Access Bearer) establishment success rate of the network access rate key poor cell is obtained, and the voice service drop rate of the drop rate key poor cell is obtained;

[0146] If the E-RAB establishment success rate of the network access rate key poor cell is lower than a preset first threshold, the network access rate key poor cell is added to the key poor cell list.

[0147] If the voice service drop rate of the drop rate key poor cell is higher than a preset second threshold, the drop rate key poor cell is added to the key poor cell list.

[0148] In the embodiment, the wireless side indexes of the E-RAB establishment success rate and the voice service drop rate are selected as the verification indexes, and the network access rate key poor cell and the drop rate key poor cell are verified, wherein the calculation formula of the E-RAB establishment success rate is as follows:

[0149] E-RAB establishment success rate = E-RAB establishment success times / E-RAB establishment request times;

[0150] The calculation formula of the voice service drop rate is as follows:

[0151] Voice service drop rate = voice service drop times / voice service response times.

[0152] In the embodiment, the E-RAB establishment success rate and the voice service drop rate corresponding to each voice service are set as shown in Table 4, wherein when the wireless side index of the E-RAB establishment success rate of the network access rate key poor cell is lower than 98%, it is considered that the obtained network access rate key poor cell is accurate, and the network access rate key poor cell is added to the key poor cell list. Otherwise, it is considered that the obtained network access rate key poor cell needs to be observed subsequently. When the wireless side index of the voice service drop rate of the drop rate key poor cell is higher than 1%, it is considered that the obtained drop rate key poor cell is accurate, and the drop rate key poor cell is added to the key poor cell list. Otherwise, it is considered that the obtained drop rate key poor cell needs to be observed subsequently.

[0153] Table 4: Setting of the E-RAB establishment success rate and the voice service drop rate corresponding to each voice service

[0154]

[0155] Optionally, the method comprises:

[0156] The dispatching information for optimizing the key poor cell is issued.

[0157] In the embodiment, in order to improve the network optimization efficiency and improve the network quality, for all key poor quality cells or key poor quality cells located in the list of key poor quality cells, mail, short message or system document can be sent to the corresponding responsible person of the provincial branch to perform positioning and optimization of the key poor quality cell.

[0158] The method for screening key poor quality cells provided by the embodiment of the application first divides end-to-end call record into voice over long term evolution (VOLTE) voice service, voice over new radio (VoNR) voice service and evolved packet circuit domain fallback (EPS FB) voice service, then performs statistical analysis of voice service indicators in the cell dimension for each type of voice service respectively by day, screens out poor quality cells that appear poor quality conditions on a single day, and finally performs sliding window monitoring on the poor quality cells to obtain key poor quality cells. The application faces voice services, screens out poor quality cells using cell-level voice service indicators, and then screens out key poor quality cells of voice services by combining sliding window monitoring, so as to improve the accuracy of positioning of key poor quality cells and avoid false judgments caused by data anomalies or terminal problems, and solve the problem that normal cells are misjudged as poor quality cells in the existing method for screening poor quality cells.

[0159] Embodiment 2

[0160] As shown in Figure 2 The embodiment provides a device for screening key poor quality cells, which is used for executing the method for screening key poor quality cells, and includes:

[0161] A voice service separation module 11 is configured to divide end-to-end call records into voice over long term evolution (VOLTE) voice service, voice over new radio (VoNR) voice service and evolved packet circuit domain fallback (EPS FB) voice service.

[0162] A statistical analysis module 12 is connected with the voice service separation module 11 and is configured to perform statistical analysis of voice service indicators in the cell dimension for each type of voice service respectively by day, and screen out poor quality cells that appear poor quality conditions on a single day.

[0163] A key poor quality cell module 13 is connected with the statistical analysis module 12 and is configured to perform sliding window monitoring on the poor quality cells to obtain key poor quality cells.

[0164] Optionally, the device further includes:

[0165] An XDR data acquisition module is configured to acquire external data representation (XDR) data in a specified area within a preset time period.

[0166] A data cleaning module is configured to clean the acquired XDR data.

[0167] A data association module is configured to associate the cleaned XDR data according to a VOLTE, EPS FB, or VoNR voice service signaling flow to form an end-to-end call record.

[0168] Optionally, the statistical analysis module 12 is specifically configured to:

[0169] For VOLTE voice services and VoNR voice services, perform statistical analysis on network connection rates, call drop rates, and average call setup time delays on a daily basis in a cell dimension, and filter out poor-quality cells that have poor-quality conditions on a single day.

[0170] For EPS FB voice services, perform statistical analysis on network connection rates, call drop rates, average call setup time delays, and average fallback time delays on a daily basis in a cell dimension, and filter out poor-quality cells that have poor-quality conditions on a single day.

[0171] Optionally, the apparatus further comprises:

[0172] A grade division module is configured to divide network quality into two grades of excellent and ordinary.

[0173] A poor-quality threshold setting module is configured to set different poor-quality thresholds for each type of voice service according to the two grades of excellent and ordinary.

[0174] Optionally, if the network quality of the existing network is excellent, and the voice service indicators of the VOLTE voice service and the VoNR voice service satisfy at least one of the following conditions, the cell is defined as a poor-quality cell:

[0175] The network connection rate is less than a first network connection rate poor-quality threshold;

[0176] The call drop rate is greater than a first call drop rate poor-quality threshold;

[0177] The average call setup time delay is greater than a first average call setup time delay poor-quality threshold;

[0178] If the network quality of the existing network is ordinary, and the voice service indicators of the VOLTE voice service and the VoNR voice service satisfy at least one of the following conditions, the cell is defined as a poor-quality cell:

[0179] The network connection rate is less than a second network connection rate poor-quality threshold;

[0180] The call drop rate is greater than a second call drop rate poor-quality threshold;

[0181] The average call setup time delay is greater than a second average call setup time delay poor-quality threshold;

[0182] The first network access rate quality difference threshold is greater than the second network access rate quality difference threshold, the first call drop rate quality difference threshold is less than the second call drop rate quality difference threshold, and the first average call setup time quality difference threshold is less than the second average call setup time quality difference threshold.

[0183] Optionally, the first network access rate quality difference threshold is 99%, the second network access rate quality difference threshold is 98%, the first call drop rate quality difference threshold is 0.05%, the second call drop rate quality difference threshold is 0.1%, the first average call setup time quality difference threshold is 3400ms, and the second average call setup time quality difference threshold is 4000ms.

[0184] Optionally, if the network quality of the existing network is excellent, and the voice service indicators of the EPS FB voice service satisfy at least one of the following, the cell is defined as a quality difference cell:

[0185] The network access rate is less than a third network access rate quality difference threshold;

[0186] The call drop rate is greater than a third call drop rate quality difference threshold;

[0187] The average call setup time is greater than a third average call setup time quality difference threshold;

[0188] The average fallback time is greater than a first average fallback time quality difference threshold;

[0189] If the network quality of the existing network is ordinary, and the voice service indicators of the EPS FB voice service satisfy at least one of the following, the cell is defined as a quality difference cell:

[0190] The network access rate is less than a fourth network access rate quality difference threshold;

[0191] The call drop rate is greater than a fourth call drop rate quality difference threshold;

[0192] The average call setup time is greater than a fourth average call setup time quality difference threshold;

[0193] The average fallback time is greater than a second average fallback time quality difference threshold;

[0194] The third network access rate quality difference threshold is greater than the fourth network access rate quality difference threshold, the third call drop rate quality difference threshold is less than the fourth call drop rate quality difference threshold, the third average call setup time quality difference threshold is less than or equal to the fourth average call setup time quality difference threshold, and the first average fallback time quality difference threshold is less than or equal to the second average fallback time quality difference threshold.

[0195] Optionally, the third network access rate quality difference threshold is 99%, the fourth network access rate quality difference threshold is 98%, the third call drop rate quality difference threshold is 0.05%, the fourth call drop rate quality difference threshold is 0.1%, the third average call setup time quality difference threshold and the fourth average call setup time quality difference threshold are 5000ms, and the first average fallback time quality difference threshold and the second average fallback time quality difference threshold are 1400ms.

[0196] Optionally, the key quality difference cell module 13 comprises:

[0197] a sliding monitoring window unit configured to, for each type of voice service, take a preset time length as a sliding window to continuously monitor voice service indexes of the quality difference cell;

[0198] a judging unit configured to judge the quality difference cell as a key quality difference cell if a continuous monitoring result of the quality difference cell meets a preset judging condition of the key quality difference cell.

[0199] Optionally, the device further comprises:

[0200] an order assigning and issuing module configured to issue order assigning information for optimizing the key quality difference cell.

[0201] Optionally, the device further comprises:

[0202] a key quality difference cell verification module configured to verify the network access rate key quality difference cell and the call drop rate key quality difference cell in combination with wireless PM data to obtain a verified key quality difference cell list.

[0203] Optionally, the key quality difference cell verification module specifically comprises:

[0204] a verification index acquisition unit configured to acquire, according to wireless PM data, an evolved radio access bearer (E-RAB) establishment success rate of the network access rate key quality difference cell and a voice service drop rate of the call drop rate key quality difference cell;

[0205] a first adding unit configured to add the network access rate key quality difference cell to the key quality difference cell list if the E-RAB establishment success rate of the network access rate key quality difference cell is lower than a preset first threshold;

[0206] a second adding unit configured to add the call drop rate key quality difference cell to the key quality difference cell list if the voice service drop rate of the call drop rate key quality difference cell is higher than a preset second threshold.

[0207] Embodiment 3:

[0208] Reference Figure 3The embodiment provides a device for screening key poor-quality plots, which comprises a memory 21 and a processor 22, the memory 21 stores a computer program, and the processor 22 is configured to run the computer program to execute the method for screening key poor-quality plots in the embodiment 1.

[0209] The memory 21 is connected with the processor 22, the memory 21 can adopt a flash memory or a read-only memory or other memories, and the processor 22 can adopt a central processing unit or a single-chip microcomputer.

[0210] Embodiment 4

[0211] The embodiment provides a computer readable storage medium, and the computer readable storage medium stores a computer program, and the computer program is executed by a processor to realize the method for screening key poor-quality plots in the above embodiment 1.

[0212] The computer readable storage medium includes volatile or non-volatile, removable or non-removable media implemented in any method or technology for storing information such as computer readable instructions, data structures, computer program modules or other data. The computer readable storage medium includes but is not limited to RAM (Random Access Memory), ROM (Read-Only Memory), EEPROM (Electrically Erasable Programmable read only memory), flash memory or other memory technologies, CD-ROM (Compact Disc Read-Only Memory), digital versatile disc (DVD) or other optical disc storage, magnetic cassettes, magnetic tapes, magnetic disc storage or other magnetic storage devices, or any other medium that can be used to store desired information and can be accessed by a computer.

[0213] The device and readable storage medium for screening focus poor quality cells provided by embodiments 2 to 4 first divide end-to-end bill record into voice over long term evolution (VOLTE) voice service, voice over new radio (VoNR) voice service and evolved packet circuit domain fallback (EPS FB) voice service; then, for each type of voice service, the voice service index of each cell is analyzed by day to screen out poor quality cells that appear in a single day; finally, the poor quality cells are monitored by a sliding window to obtain focus poor quality cells. The present application faces voice services, and after screening poor quality cells by using cell-level voice service indexes, the focus poor quality cells are screened by combining sliding window monitoring, so as to improve the accuracy of positioning focus poor quality cells, avoid false judgments caused by data anomalies or terminal problems, and solve the problem that normal cells are misjudged as poor quality cells in the existing method for screening poor quality cells.

[0214] It can be understood that the above embodiments are only exemplary embodiments adopted for illustrating the principles of the present application, and the present application is not limited thereto. Various modifications and improvements can be made by those skilled in the art without departing from the spirit and essence of the present application, and these modifications and improvements are also considered as the protection scope of the present application.

Claims

1. A method of screening for key poor performing sites, characterized by, The method comprises the following steps: dividing end-to-end call record into voice over long term evolution (VOLTE) voice service, voice over new radio (VoNR) voice service and evolved packet circuit domain fallback (EPS FB) voice service; performing cell dimension voice service index statistical analysis per day for each type of voice service, and screening out quality difference cells with quality difference in a single day; performing sliding window monitoring on the quality difference cells to obtain key quality difference cells; the key quality difference cells comprise network access rate key quality difference cells and call drop rate key quality difference cells, and after the sliding window monitoring on the quality difference cells to obtain the key quality difference cells, the method further comprises: combining wireless PM data to verify the network access rate key quality difference cells and the call drop rate key quality difference cells to obtain a verified key quality difference cell list; the verification of the network access rate key quality difference cells and the call drop rate key quality difference cells by combining wireless PM data to obtain a verified key quality difference cell list specifically comprises: obtaining evolved radio access bearer (E-RAB) establishment success rate of the network access rate key quality difference cells and voice service drop rate of the call drop rate key quality difference cells according to wireless PM data; if the E-RAB establishment success rate of the network access rate key quality difference cells is lower than a preset first threshold, the network access rate key quality difference cells are added to the key quality difference cell list; if the voice service drop rate of the call drop rate key quality difference cells is higher than a preset second threshold, the call drop rate key quality difference cells are added to the key quality difference cell list, wherein the first threshold is 98%, and the second threshold is 1%.

2. The method of claim 1, wherein, before the end-to-end call record is divided into the VOLTE voice service, the VoNR voice service and the EPS FB voice service, the method further comprises: collecting external data representation (XDR) data in a specified area within a preset time period; cleaning the collected XDR data; associating the cleaned XDR data according to VOLTE, EPS FB and VoNR voice service signaling flow to form the end-to-end call record.

3. The method of claim 1, wherein, the cell dimension voice service index statistical analysis per day for each type of voice service to screen out quality difference cells with quality difference in a single day specifically comprises: performing network access rate, call drop rate and average call setup delay statistical analysis per day for the VOLTE voice service and the VoNR voice service in a cell dimension to screen out quality difference cells with quality difference in a single day; performing network access rate, call drop rate, average call setup delay and average fallback delay statistical analysis per day for the EPS FB voice service in a cell dimension to screen out quality difference cells with quality difference in a single day.

4. The method of claim 3, wherein, the method further comprises: dividing network quality into two levels of excellent and ordinary; setting different quality difference thresholds for each type of voice service according to the two levels of excellent and ordinary.

5. The method of claim 4, wherein, If the network quality of the existing network is excellent, and the voice service indicators of the VOLTE voice service and the VoNR voice service satisfy at least one of the following, the cell is defined as a poor quality cell: The network access rate is less than a first network access rate poor quality threshold value; The call drop rate is greater than a first call drop rate poor quality threshold value; The average call setup time delay is greater than a first average call setup time delay poor quality threshold value; If the network quality of the existing network is ordinary, and the voice service indicators of the VOLTE voice service and the VoNR voice service satisfy at least one of the following, the cell is defined as a poor quality cell: The network access rate is less than a second network access rate poor quality threshold value; The call drop rate is greater than a second call drop rate poor quality threshold value; The average call setup time delay is greater than a second average call setup time delay poor quality threshold value; The first network access rate poor quality threshold value is greater than the second network access rate poor quality threshold value, the first call drop rate poor quality threshold value is less than the second call drop rate poor quality threshold value, and the first average call setup time delay poor quality threshold value is less than the second average call setup time delay poor quality threshold value.

6. The method of claim 5, wherein, The first network access rate poor quality threshold value is 99%, the second network access rate poor quality threshold value is 98%, the first call drop rate poor quality threshold value is 0.05%, the second call drop rate poor quality threshold value is 0.1%, the first average call setup time delay poor quality threshold value is 3400ms, and the second average call setup time delay poor quality threshold value is 4000ms.

7. The method of claim 4, wherein, If the network quality of the existing network is excellent, and the voice service indicators of the EPS FB voice service satisfy at least one of the following, the cell is defined as a poor quality cell: The network access rate is less than a third network access rate poor quality threshold value; The call drop rate is greater than a third call drop rate poor quality threshold value; The average call setup time delay is greater than a third average call setup time delay poor quality threshold value; The average fallback time delay is greater than a first average fallback time delay poor quality threshold value; If the network quality of the existing network is ordinary, and the voice service indicators of the EPS FB voice service satisfy at least one of the following, the cell is defined as a poor quality cell: The network access rate is less than a fourth network access rate poor quality threshold value; The call drop rate is greater than a fourth call drop rate poor quality threshold value; The average call setup time delay is greater than a fourth average call setup time delay poor quality threshold value; The average fallback time delay is greater than a second average fallback time delay poor quality threshold value; The third network access rate poor quality threshold value is greater than the fourth network access rate poor quality threshold value, the third call drop rate poor quality threshold value is less than the fourth call drop rate poor quality threshold value, the third average call setup time delay poor quality threshold value is less than or equal to the fourth average call setup time delay poor quality threshold value, and the first average fallback time delay poor quality threshold value is less than or equal to the second average fallback time delay poor quality threshold value.

8. The method of claim 7, wherein, The third network access rate poor quality threshold value is 99%, the fourth network access rate poor quality threshold value is 98%, the third call drop rate poor quality threshold value is 0.05%, the fourth call drop rate poor quality threshold value is 0.1%, the third average call setup time delay poor quality threshold value and the fourth average call setup time delay poor quality threshold value are 5000ms, and the first average fallback time delay poor quality threshold value and the second average fallback time delay poor quality threshold value are 1400ms.

9. The method of claim 3, wherein, The sliding window monitoring on the poor quality cell is performed to obtain a key poor quality cell, and specifically includes: For each type of voice service, a preset time length is used as a sliding window to continuously monitor voice service indexes of the poor quality cell; If the continuous monitoring result of the poor quality cell meets a preset judgment condition of the key poor quality cell, the poor quality cell is determined as the key poor quality cell.

10. The method of claim 9, wherein, The method includes: The dispatching information for optimizing the key poor quality cell is issued.

11. A device for screening key poor-quality residential areas, characterized in that, It includes: A voice service separation module is configured to separate end-to-end call records into voice over long term evolution (VOLTE) voice services, voice over new radio (VoNR) voice services, and evolved packet circuit domain fallback (EPS FB) voice services; A statistical analysis module is connected with the voice service separation module and configured to perform statistical analysis of voice service indexes of each type of voice service in a cell dimension on a daily basis to filter out poor quality cells that have poor quality on a single day; A key poor quality cell module is connected with the statistical analysis module and configured to perform sliding window monitoring on the poor quality cells to obtain key poor quality cells; The key poor quality cells include network access rate key poor quality cells and call drop rate key poor quality cells, and the device further includes: A key poor quality cell verification module is configured to verify the network access rate key poor quality cells and the call drop rate key poor quality cells in combination with wireless PM data to obtain a list of verified key poor quality cells; The key poor quality cell verification module specifically includes: A verification index acquisition unit is configured to acquire an evolved radio access bearer (E-RAB) establishment success rate of the network access rate key poor quality cells and a voice service drop rate of the call drop rate key poor quality cells according to wireless PM data; A first adding unit is configured to add the network access rate key poor quality cell to the list of key poor quality cells if the E-RAB establishment success rate of the network access rate key poor quality cell is lower than a preset first threshold value; A second adding unit is configured to add the call drop rate key poor quality cell to the list of key poor quality cells if the voice service drop rate of the call drop rate key poor quality cell is higher than a preset second threshold value, where the first threshold value is 98%, and the second threshold value is 1%.

12. An apparatus for screening out poor quality sites, characterized by: The device includes a memory and a processor, the memory stores a computer program, and the processor is configured to run the computer program to implement the method for screening key poor quality cells according to any one of claims 1-10.

13. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a computer program, and the computer program is executed by the processor to implement the method for screening key poor quality cells according to any one of claims 1-10.

Images