JP2017117063A - Radio base station maintenance device, radio base station maintenance system, radio base station maintenance method, and radio base station maintenance program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a radio base station maintenance device capable of collecting data that is generated at a radio base station device in an own device to analyze it, and detecting a sign of abnormality.SOLUTION: A radio base station maintenance device 40 includes: a dictionary storage unit 40a that stores a dictionary for analyzing a sign of failure in a radio base station device; a collection unit 40b that collects data necessary for analysis that is generated in the radio base station device; and an analyzer 40c that analyzes collected data based on the dictionary to give an instruction to notify a host monitoring device of detection results when a sign of failure is detected as a result of analysis.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a technique for analyzing a sign of hardware failure and software failure in a radio base station apparatus.

  A radio base station apparatus generally has a maintenance function. In the maintenance function, when it is determined that a configured hardware failure or software failure has occurred, the maintenance function is notified to a higher-level monitoring device. The state of the radio base station apparatus is monitored by the maintainer, not the developer of the radio base station. When an abnormality occurs, the maintenance person replaces hardware or modifies software. However, in order to stably supply a high-quality wireless communication service, it is necessary to perform maintenance work to detect a sign before the abnormality of the wireless base station apparatus occurs and repair it at an early stage.

  FIG. 8 is a flowchart showing a recovery procedure when an abnormality occurs in the radio base station apparatus in the host monitoring apparatus. If an abnormality occurs during normal operation of the radio base station apparatus in step S1 (step S2), the host monitoring apparatus detects the abnormality in step S3, and the maintainer investigates the cause of the abnormality in step S4. . Further, in step S5, the maintenance person on the upper monitoring apparatus side or the radio base station apparatus side enters the location that is the cause of the abnormality inside the radio base station apparatus, and in step S6, the maintenance person removes the cause of the abnormality, Recovery measures are taken so that the base station device can operate normally.

  When an abnormality occurs between steps S2 to S6 described above, a time during which the quality of the radio service managed by the radio base station apparatus is degraded occurs. During the time when the quality is lowered, the range of the wireless service area is reduced, the number of users that can be accommodated is reduced, and the communication speed is lowered.

  As an improvement measure for this problem, a method for detecting an abnormality (silent failure) in which an abnormality cannot be detected from statistical information of network traffic has been studied. However, when a sign of a device abnormality occurs, the effect on network traffic is negligible, and it is difficult for the maintenance person to notice that an abnormality is likely to occur at this stage.

  Patent Document 1 discloses a technique for collecting a system performance value and performing failure detection on an operation management apparatus.

  Patent Document 2 discloses a technique for identifying a faulty radio base station apparatus and determining a fault factor on a radio base station apparatus monitoring apparatus.

JP 2013-200899 A JP 2013-214859 A

  In Patent Document 1, since an operation management apparatus, which is a higher-level apparatus, collects system performance values and the like, failure detection is performed not by a developer of a radio base station apparatus but by a maintenance person. However, the maintenance person cannot perform error analysis from the viewpoint of development of the radio base station apparatus. Patent Document 1 collects system performance information and abnormal messages and detects system performance deterioration by comparing with a normal correlation model, but detects a failure that cannot be clearly distinguished from abnormality. I can't do it.

  In Patent Literature 2, a host monitoring device of a radio base station device identifies a radio base station device in which a failure has occurred and determines the cause of the failure. However, since the host monitoring apparatus, not the radio base station apparatus itself, determines a sign of abnormality in the radio base station apparatus, the amount of information that can be acquired for performing the determination of the failure factor is small. The accuracy is low. In addition, when the failure occurs, the performance degradation of the entire system appears remarkably, and it takes time for the recovery measures.

  The present invention has been made to solve the above problems. The main object of the present invention is to provide a radio base station maintenance apparatus or the like that collects and analyzes data generated in a radio base station apparatus and analyzes it to detect a sign of abnormality.

In order to solve the above problems, the first feature of the present invention is:
A dictionary storage unit for storing a dictionary for analyzing a sign of failure in the radio base station device;
A collection unit for collecting data necessary for the analysis generated in the radio base station device;
An analysis unit that analyzes the collected data based on the dictionary and instructs the external higher-level monitoring device to notify the detection result when the failure sign is detected as a result of the analysis. It is a radio base station maintenance device.

The second feature of the present invention is that
At least one radio base station;
The radio base station maintenance device as described above, each connected to the radio base station;
A radio base station maintenance system comprising a radio base station monitoring device that monitors the radio base station.

The third feature of the present invention is that
Collecting data necessary for the analysis generated in the radio base station device,
Analyzing the collected data based on a dictionary for analyzing a failure sign in the radio base station apparatus stored in a dictionary storage unit, and as a result of the analysis, the failure sign is detected This is a radio base station maintenance method for instructing to notify an external host monitoring apparatus of the detection result.

The fourth feature of the present invention is that
A function of collecting data necessary for the analysis generated in the radio base station device;
Analyzing the collected data based on a dictionary for analyzing a failure sign in the radio base station apparatus stored in a dictionary storage unit, and as a result of the analysis, the failure sign is detected A wireless base station maintenance program for causing a computer to realize a function of instructing an external higher-level monitoring device to notify the result of the detection.

  According to the present invention, the present invention can provide a radio base station maintenance apparatus or the like that collects and analyzes data generated in a radio base station apparatus and analyzes it to detect a sign of abnormality.

It is a figure which shows the structural example of the radio base station system in the 1st Embodiment of this invention. It is a figure which shows the internal structural example of the radio base station apparatus in 1st Embodiment. It is a figure which shows the internal structural example of the maintenance part in the wireless base station apparatus in 1st Embodiment. It is a flowchart which shows the whole operation | movement of the maintenance part in a wireless base station apparatus. It is a flowchart which shows the operation | movement of the periodic analysis data collection of the maintenance part in a wireless base station apparatus. It is a flowchart which shows the operation | movement of the non-periodic analysis data collection of the maintenance part in a wireless base station apparatus. It is a figure which shows the structural example of the radio base station maintenance apparatus in the 2nd Embodiment of this invention. It is a flowchart which shows the maintenance operation | movement in a high-order monitoring apparatus.

  Next, an embodiment of the present invention will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, the drawings schematically show the configuration of the embodiment of the present invention. Furthermore, the embodiment of the present invention described below is an example, and can be appropriately changed within a range in which the essence is the same.

<First Embodiment>
(Radio base station system)
A configuration example of the radio base station system 100 according to the first embodiment of the present invention will be described with reference to FIG.

  The radio base station system 100 according to the first embodiment of the present invention includes a radio base station monitoring device 2, a plurality of radio base station devices 1, and a plurality of radio transmission / reception devices 3. The wireless base station monitoring device 2, the wireless base station device 1, and the wireless transmission / reception device 3 are communicably connected via a wired network, a wireless network, or a combination thereof.

  The wireless transmission / reception device 3 is a terminal capable of transmitting and receiving data by wireless communication such as a server, personal computer, smartphone, PDA (Personal Digital Assistant) used by a user or the like.

  The radio base station apparatus 1 transmits / receives data requested by the radio transmission / reception apparatus 3 to / from a plurality of radio transmission / reception apparatuses 3. In addition, when the radio base station apparatus 1 detects a sign of abnormality in the radio base station apparatus 1, the radio base station apparatus 1 notifies the radio base station monitoring apparatus 2 that is a host apparatus of the sign of abnormality.

The radio base station monitoring apparatus 2 transmits / receives data requested by the radio transmission / reception apparatus 3 to / from a plurality of radio base station apparatuses 1. Note that the radio base station monitoring device 2 receives a notification from the radio base station device 1 when a sign of abnormality occurs in the radio base station device 1 as a higher-level monitoring device of the radio base station device 1.
(Radio base station equipment)
The internal configuration of the radio base station apparatus 1 will be described with reference to FIG. As shown in FIG. 2, the radio base station apparatus 1 includes a maintenance unit 4 and a plurality of processing units 5a, 5b,..., 5n (hereinafter referred to as processing units 5a to 5n). The processing units 5a to 5n are devices for performing specific processing, and are configured by hardware and software.

  As a configuration example for realizing the radio base station apparatus 1, a case where a plurality of card slots (not shown) are provided in the radio base station apparatus 1 will be described. A card for realizing each processing unit 5a to 5n is inserted into the card slot. The card is equipped with an IC (Integrated Circuit) chip, a memory, a DSP (Digital Signal Processor), etc., and the IC chip or the like stores a program or the like for realizing the functions of the processing units 5a to 5n. The Functions of the processing units 5a to 5n include a function for controlling wireless data exchanged with the wireless transmission / reception device 3, a function for controlling communication with a host device including the wireless base station monitoring device 2, and a wireless transmission / reception device. 3 and the like. The card type is different for each function type. Further, the redundant configuration varies depending on the card type. Each card may not be able to terminate the processing with one type of card when realizing the function. In this case, the processing is executed in cooperation with a plurality of cards. Between the cards, in addition to data for card control, communication with the wireless transmission / reception device 3 and exchange of control are performed. The maintenance unit 4 may also be realized as a card.

As another configuration example for realizing the radio base station apparatus 1, only maintenance data can be remotely downloaded to the maintenance unit 4 of the radio base station apparatus 1 via an ASP (Application Service Provider) or the like. In this case, an external storage device (not shown) is provided in a specific card, and a program and data are stored in this external storage device. The external storage device can also be accessed from the radio base station monitoring device 2, and software update of the radio base station device 1 is realized by file update from the external storage device. Each card corresponding to the processing units 5a to 5n transfers the file from the external storage device to the memory in the card via inter-card communication so that the latest data can be executed.
(Maintenance Department)
As shown in FIG. 3, the maintenance unit 4 includes a maintenance monitoring unit 4a, an analysis unit 4b, an analysis data collection unit 4c, a dictionary storage unit 4d, and a work data storage unit 4e.

  The dictionary storage unit 4d is an analysis dictionary that registers information related to detection of a sign of abnormality. The information includes information related to the collection timing of data necessary for analysis (hereinafter referred to as analysis data), information related to the operation specifications of the analysis function, ID (IDentifer: identifier) for identifying analysis data, and analysis execution Analysis algorithm ID, input value for performing analysis, threshold value for determining a sign of occurrence of abnormality, and the like. Information related to the collection of analysis data includes information on the timing of data collection, for example, the ID of analysis data to be collected periodically, the period of data collection, and the possibility of a failure occurring immediately (non-periodically). The ID of the data to be analyzed is included. Each ID is set for each of the processing units 5a to 5n of the radio base station apparatus 1.

  The work data storage unit 4e stores analysis data collected from the processing units 5a to 5n. The analysis data includes “error log information that may lead to hardware failure”, “error log information that may lead to software failure”, and “OS (Operation System) management information”.

  Error log information that may lead to hardware failure is a log that detects that the response speed of the hardware is different from the normal time, and errors occur at a frequency that is less than the threshold (number of protection stages) set in advance during hardware control. A log or the like indicating that it has occurred.

  The error log information that may lead to a software malfunction is a log that detects a combination of parameters that does not occur in normal operation, a log that detects that the number of semi-normal processes has exceeded a certain threshold, and the like.

  The OS management information includes the number of processes being executed, the running time of the processes, the stack size, the CPU (Central Processing Unit) usage rate, the number of disk I / Os (Input / Output), and the like.

  The analysis data collection unit 4c collects analysis data from the processing units 5a to 5n and stores it in the work data storage unit 4e. It is assumed that each analysis data includes an ID that can identify the type of the data.

  The analysis unit 4b compares the ID included in the collected data in the work data storage unit 4e with the analysis data ID in the dictionary storage unit 4d to determine whether the data is necessary for the analysis, and is necessary for the analysis. Only the correct data is extracted as analysis data. The analysis unit 4b calculates statistical information by counting the extracted analysis data, and determines whether the calculated statistical information reaches a threshold that can be determined as a sign of occurrence of an abnormality. Based on the determination result, the analysis unit 4b determines whether or not it is a sign of the occurrence of an abnormality.

The maintenance monitoring unit 4a performs maintenance in the radio base station apparatus 1. When the maintenance monitoring unit 4a receives from the analysis unit 4b a notification that is determined to be a sign of an abnormality, the maintenance monitoring unit 4a notifies the radio base station monitoring device 2 that is a higher-level device.
(Operation of radio base station equipment)
Next, the overall operation of the maintenance unit 4 in the radio base station apparatus 1 will be described with reference to the flowchart of FIG.

  First, in step S101, when the maintenance unit 4 is activated, the analysis unit 4b reads the dictionary from the dictionary storage unit 4d and sets information for detecting a sign of occurrence of an abnormality. The information includes information related to the collection timing of analysis data, information related to operation rules of the analysis function, analysis data ID, analysis algorithm ID, input argument to the analysis algorithm, a threshold value for determining a sign of occurrence of an abnormality, and the like.

  In step S102, the analysis data collection unit 4c collects data from the processing units 5a to 5n and stores it in the work data storage unit 4e. The data includes an ID for identifying the type of the data.

  The collected data includes error log information that may lead to hardware failure, error log information that may lead to software failure, and OS management information. Of these data, two pieces of error log information are collected irregularly (immediately after the occurrence), and OS management information is collected periodically. Details will be described later with reference to FIGS.

  In step S103, the analysis unit 4b collates the ID included in the collected data in the work data storage unit 4e with the analysis data ID in the dictionary storage unit 4d to determine whether the data is necessary for analysis (analysis data). And only the analysis data is extracted. The analysis unit 4b calculates statistical information by counting the extracted analysis data, and determines whether the calculated statistical information reaches a threshold that can be determined as a sign of occurrence of an abnormality. The statistical information includes the number of counts of each analysis data, the frequency of occurrence of each analysis data, the number of days from the previous occurrence to the current occurrence of each analysis data, and the like.

A specific example of determination will be described. For example, the analysis unit 4b divides the time at which an error occurred in the collected analysis data (error log information) in units of time, and after the number of occurrences has been counted, moves the latest several times (for example, 3 times) An average is calculated, and it is determined that a failure sign has occurred when the calculated value is 10 times or more. In this case, the input argument is
-Analysis data ID: 0x10 Error log (software error)
Analysis algorithm ID (type): 0x20 Input argument to moving average determination / analysis algorithm: Total unit = 1 hour, Moving average interval = 3 times, Predictive threshold = 10 times.

  Based on the determination result, the analysis unit 4b determines whether or not it is a sign of occurrence of an abnormality. When the analysis unit 4b determines that the sign is an occurrence of abnormality, the analysis unit 4b notifies the maintenance monitoring unit 4a of the determination result.

  In step S104, when the maintenance monitoring unit 4a receives from the analysis unit 4b a notification that is determined to be a sign of the occurrence of an abnormality, the maintenance monitoring unit 4a notifies the radio base station monitoring device 2 that is a higher-level device. Thereafter, a maintenance person on the radio base station monitoring apparatus 2 side performs restoration work or the like based on the notification.

  Thus, the overall operation of the maintenance unit 4 in the radio base station apparatus 1 is completed.

  Next, a case where the analysis data collection unit 4c collects data to be regularly observed and a case of collecting data to be collected irregularly in step S102 will be described. First, the case of collecting data to be regularly observed will be described with reference to the flowchart of FIG.

  First, in step S201, the analysis data collection unit 4c collects OS management information as analysis data for each periodic collection period included in the information related to the collection timing of analysis data after reading the analysis dictionary. Do.

  In step S202, the analysis data collection unit 4c stores the collected data in the work data storage unit 4e for each regular collection period.

  Next, the case of collecting data to be observed irregularly will be described with reference to the flowchart of FIG.

  First, in step S301, after reading the analysis dictionary, the analysis data collection unit 4c receives, for example, error log information as specific data to be collected for each occurrence included in the information related to the collection timing of the analysis data. .

  In step S302, the analysis data collection unit 4c may immediately store the data in the work data storage unit 4e, or may collect data necessary for analyzing the specific data.

  As described above, according to the first embodiment of the present invention, data generated in the radio base station apparatus 1 can be collected and analyzed by the own apparatus, and a sign of abnormality can be detected. The reason is that the maintenance unit 4 includes a dictionary storage unit 4d that stores a dictionary for analyzing a sign of failure in the radio base station apparatus 1, and the analysis data collection unit 4c collects data necessary for the analysis, This is because if the analysis unit 4b analyzes the data collected based on the dictionary and detects a failure sign as a result of the analysis, the analysis unit 4b instructs to notify the external higher-level monitoring device of the detection result.

  According to the first embodiment of the present invention, the radio base station apparatus autonomously detects a sign of occurrence of an abnormality and notifies the higher-level monitoring apparatus of the detection result. For this reason, the operational efficiency of the radio base station apparatus 1 can be improved, and the period during which the radio communication service quality is degraded can be shortened. Further, the sign detection accuracy of device abnormality can be adjusted in accordance with the maturity level of both the development department and the operation department of the radio base station apparatus 2.

  In addition, the maintenance unit 4 in the radio base station apparatus 1 includes a dictionary storage unit 4d that stores information that enables the same analysis as the analysis flow when a device abnormality occurs in the designer. It is possible to adjust the excess or deficiency of the data to be collected in the dictionary storage unit 4d, and by appropriately adjusting, the sign detection accuracy of occurrence of abnormality can be improved.

  Furthermore, in the radio base station apparatus 1, even if the maintenance person can grasp the characteristics of the abnormality in hardware alone or software alone, if the hardware and software are combined, the maintenance person cannot determine whether the abnormality will occur. There is. Even in such a case, by providing the dictionary storage unit 4d, it is possible to obtain the same effect as when the developer himself / herself analyzes the error log information of the radio base station apparatus 1.

The analysis unit 4b also analyzes using statistical information. As a result, it is possible to detect a sign of an apparatus abnormality from the difference information during normal operation.
<Second Embodiment>
The radio base station maintenance device 40 according to the second embodiment of the present invention is a device mounted on the radio base station device or connected so as to be communicable. As shown in FIG. The collecting unit 40b and the analyzing unit 40c are provided.

  The dictionary storage unit 40a stores a dictionary for analyzing a sign of failure in the radio base station apparatus.

The collection unit 40b includes a collection unit that collects data necessary for analysis generated in the radio base station device, and
The analysis unit 40c analyzes the collected data based on the dictionary, and if a failure sign is detected as a result of the analysis, the analysis unit 40c instructs the external higher-level monitoring device to be notified of the detection result. The radio base station maintenance device 40 according to the second embodiment corresponds to the minimum configuration (maintenance unit 4) of the radio base station device 1 according to the first embodiment.

  According to the second embodiment of the present invention, data generated in the radio base station apparatus can be collected and analyzed by the own apparatus, and a sign of abnormality can be detected. This is because the radio base station maintenance device 40 includes a dictionary storage unit 40a for storing a dictionary for analyzing a sign of a failure in the radio base station device, and the collection unit 40b collects data necessary for the analysis, This is because when the analysis unit 40c analyzes data collected based on the dictionary and detects a failure sign as a result of the analysis, the analysis unit 40c instructs to notify the external higher-level monitoring device of the detection result.

1: Radio base station apparatus 2: Radio base station monitoring apparatus 3: Radio transmission / reception apparatus 4: Maintenance section 4a: Maintenance monitoring section 4b: Analysis section 4c: Analysis data collection section 4d: Dictionary storage section 4e: Work data storage section 5a: Processing unit 5b: Processing unit 5c: Processing unit 5n: Processing unit 40: Radio base station maintenance device 40a: Dictionary storage unit 40b: Collection unit 40c: Analysis unit 100: Radio base station system

Claims (8)

Dictionary storage means for storing a dictionary for analyzing a sign of failure in the radio base station apparatus;
A collecting means for collecting data required for the analysis generated in the radio base station device;
Analyzing means for analyzing the collected data based on the dictionary and instructing to notify an external higher-level monitoring device of the detection result when the failure sign is detected as a result of the analysis. Wireless base station maintenance device. The collected data is error log information that may lead to the failure, although it cannot be determined by the data itself among the data generated in the radio base station device.
The radio base station maintenance apparatus according to claim 1. The error log information includes information that may lead to a failure of software used in the device, and information that may lead to failure of hardware used in the device.
The radio base station maintenance apparatus according to claim 1 or 2. The error log information further includes management information of an operation system used in the device.
The radio base station maintenance apparatus according to claim 1. The analysis means analyzes the operation system management information periodically and the error log information irregularly.
The radio base station maintenance apparatus according to claim 1. At least one radio base station;
The radio base station maintenance device according to any one of claims 1 to 5, each connected to the radio base station,
A radio base station maintenance system comprising: a radio base station monitoring device that monitors the radio base station. Collecting data necessary for the analysis generated in the radio base station device,
Analyzing the collected data based on a dictionary for analyzing a failure sign in the radio base station apparatus stored in a dictionary storage means, and when the failure sign is detected as a result of the analysis And a radio base station maintenance method for instructing to notify an external host monitoring apparatus of the detection result. A function of collecting data necessary for the analysis generated in the radio base station device;
Analyzing the collected data based on a dictionary for analyzing a failure sign in the radio base station apparatus stored in a dictionary storage means, and when the failure sign is detected as a result of the analysis A radio base station maintenance program for causing a computer to realize a function of instructing an external higher-level monitoring device to notify the result of the detection.

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