JP2007088811A - Radio base station apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a radio base station apparatus with a failure analysis function for reproducing a state having been on the occurrence of a failure immediately and performing failure analysis, and dealing quickly with restoration of the failure by prestoring information necessary for failure restoration. <P>SOLUTION: When the failure is detected by a task (A); the task (A) calls a failure report function (S21), and transmits the notifying message of the contents of the occurrence of the failure to an apparatus state-related control task 22 in the failure report function (S22). The control task 22 transmits a request message for acquiring log information preceding the occurrence of the failure to a log control task 23 (S23). The control task 23 performs processing of allowing a nonvolatile memory device 16 to store each event information and periodic information stored in a volatile memory device 15 (S24). Consequently, the log task 23 transmits an answer message of the acquisition of the log information preceeding the occurrence of the failure to the state-related task 22 (S25). <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a radio base station apparatus that covers a communication area of a mobile terminal such as a mobile phone, and more particularly to a radio base station apparatus that has a failure analysis function for dealing with the occurrence of a communication fault such as a mobile phone. is there.

  2. Description of the Related Art In recent years, terminal devices such as mobile phones of digital wireless communication systems using personal digital cellular (PDC) and W-CDMA (Wideband Code Division Multiple Access) have expanded the range of use from business users to personal users. It's getting on. Furthermore, these mobile phones are used in a wide range of ages from children to the elderly, and the usage population (users) is increasing rapidly. For this reason, wireless base station devices that meet a wide variety of needs have been put on the market, and products with failure analysis functions that can quickly respond to communication failures caused by these wireless base station devices should be developed. Is required.

For example, when the operation of a mobile phone is stopped due to a failure, a technology for facilitating the failure by transmitting information for failure analysis stored in advance to the mobile phone to the developer server when the mobile phone is restarted Etc. are disclosed (for example, refer to Patent Document 1). According to this technology, when an application error occurs in a mobile phone, when failure information is generated by the failure notification means of the mobile phone and transmitted to the radio base station device, the failure information is stored in the software of the radio base station device. Collected by the defect analysis server and sent to the developer server. As a result, it is possible to quickly cope with the occurrence of communication failure by the mobile phone.
JP 2003-179541 A

  However, in the prior art including the above-mentioned Patent Document 1, after performing a communication failure, a reproduction test or the like is performed along the generation procedure, and the same failure is reproduced and analyzed, and then necessary measures are taken. Therefore, it took a considerable amount of time to analyze the failure. For this reason, when a failure occurs, the time period during which the mobile phone cannot be communicated takes a long time to recover from the failure, resulting in a hindrance to communication stability.

  The present invention has been made in view of the above problems, and by storing information necessary for failure recovery in advance, the failure analysis is performed by immediately reproducing the state at the time of failure occurrence. It is an object of the present invention to provide a radio base station apparatus having a failure analysis function that can quickly cope with recovery.

  In order to solve the above-described problem, a radio base station apparatus according to the present invention is a radio base station apparatus having a failure analysis function for dealing with the occurrence of a communication failure, and is designated in advance when in a normal operation state. The volatile memory device that stores log information indicating the history contents at the time of occurrence of an event or the occurrence of a communication failure, and the log information recorded in the volatile memory device at the time of communication failure, A non-volatile memory device that stores period-limited log information for a period from a predetermined time to the occurrence time of a communication failure, and the failure analysis function acquires the time-limited log information from the non-volatile memory device when a communication failure occurs. Configured to implement failure analysis.

  According to such a configuration, the radio base station apparatus stores the hardware information and the software information in the volatile memory at a regular time or an event that is specified in advance in the normal operation state. When a failure occurs in the radio base station apparatus, information stored in the volatile memory is transferred to and stored in the nonvolatile memory, and information from the nonvolatile memory is extracted to perform failure analysis. Further, the radio base station apparatus can also perform a failure analysis by reproducing a failure occurrence state based on information extracted from the nonvolatile memory.

  According to the radio base station apparatus of the present invention, when a communication failure occurs, the log information stored in the volatile memory device is limited to an excessive period from a predetermined time before the communication failure occurs to the time when the communication failure occurs. Log information is transferred to and stored in a nonvolatile memory device. Then, the failure analysis function is realized by acquiring time-limited log information from the nonvolatile memory device and performing failure analysis. Thus, when a failure occurs, analysis information necessary for failure recovery can be acquired, and a reproduction test can be performed from the necessary information when the failure occurs. Therefore, it is possible to quickly perform failure analysis and perform failure recovery.

  The present invention provides a RAM (Random Access Memory) or the like for hardware information and software information necessary for communication operation when a predetermined periodical time or event occurs, for analysis of a normal operation state in a radio base station apparatus. Stored in a volatile memory device. When a failure occurs, log information (that is, hardware information, software information, event information, etc.) from a predetermined time before the failure to the time of the failure is transferred from the volatile memory device to ROM (Read Only Memory), etc. Re-store in non-volatile memory device.

  As a result, necessary information can be acquired from the radio base station apparatus in which the failure has occurred, and further, the failure can be analyzed by reproducing the state at the time of the failure based on the acquired information. At this time, in the conventional failure analysis function of the wireless base station device, only the failure log is stored, but in the failure analysis function of the wireless base station device according to the present invention, event information related to the failure is also stored in the nonvolatile memory. As a result, it is possible to accurately analyze the failure and execute a quick failure countermeasure.

  Hereinafter, an embodiment of a failure analysis function in a radio base station apparatus according to the present invention will be described in detail with reference to the drawings.

  First, a configuration for realizing a failure analysis function by the radio base station apparatus of the present invention will be described. FIG. 1 is a block diagram showing a schematic configuration of a radio communication system for realizing a failure analysis function by the radio base station apparatus of the present invention. The radio communication system shown in FIG. 1 includes radio base station apparatuses 2-1 to 2-n that cover communication areas of the mobile terminals 1-1 to 1-n, and radio base station apparatuses 2-1 to 2. It is configured to include a line concentrator 3 that collects -n communication data in one place, an exchange 4 that exchanges and connects each line, and a maintenance terminal 5 that handles communication failures and performs maintenance.

  FIG. 2 is an internal configuration diagram of the radio base station apparatus 2-1 shown in FIG. The internal configuration of the other radio base station apparatus 2-n shown in FIG. 1 is exactly the same as that of the radio base station apparatus 2-1, but in the following description, the radio base station apparatus 2-1 will be taken up and described. The radio base station apparatus 2-1 realizes a failure analysis function by software control.

  The radio base station apparatus 2-1 illustrated in FIG. 2 performs wired signal input / output control between a wireless communication control unit 11 that performs input / output control of a wireless signal with a portable terminal (not illustrated) and an exchange (not illustrated). The wired communication control unit 12 to be performed, the central processing unit 13 realized by a CPU or the like that performs processing of each unit of the wireless base station device 2-1, the software 14 that implements the failure analysis function, and the stored contents when the power is turned off. A lost volatile memory device 15 such as a DRAM, a non-volatile memory device 16 such as a flash memory that can retain stored contents even when the power is turned off, a clock unit 17 that generates a clock signal for performing various controls, The power supply unit 18 supplies power to each unit of the radio base station apparatus 2-1.

  The software 14 includes a program unit 14a that performs log storage control processing, a memory unit 14b that stores log information in the volatile memory device 15 and the nonvolatile memory device 16, and an OS unit 14c that implements an operation system. Yes. The wired communication control unit 12 of the wireless base station device 2-1 is connected to a maintenance tool 19 such as a personal computer that performs maintenance of the wireless base station device 2-1.

  FIG. 3 is a configuration diagram of software tasks in the radio base station apparatus 2-1 shown in FIG. The software tasks in the radio base station apparatus of the present invention include an application task 21 that performs processing of various applications, a device state-related control task 22 that performs processing related to the communication state of the radio base station apparatus, and storage control of log information. A log control task 23 to be performed, a call control task 24 to perform call control of the mobile terminal, a file-related control task 25 to control various files, and a communication service and the like are located in a layer lower than the application task 21 Middleware 26, hardware information collection task 27 that collects hardware information of the radio base station apparatus, converter 28 that performs file format conversion processing, and logs to the volatile memory device 15 and the nonvolatile memory device 16 shown in FIG. A device driver 29 for controlling storage of information, and a network WINDNET 30 that is a service providing software, a common library 31 that is a file in which programs, subroutines, data, and the like are registered together, an OS 32 that realizes an operation system, and an initialization program that automatically starts immediately after power-on. An IPL (Initial Program Loader) 33 is provided.

  Next, the flow of operations for realizing the failure analysis function by the radio base station apparatus of the present invention will be described. FIG. 4 is a flowchart showing the flow of log storage at the time of state change and event occurrence performed by the radio base station apparatus of the present invention. This figure shows log information in the volatile memory device 15 when a state change occurs in the device state related control task 22, the call control task 24, and the file related control task 25 shown in FIG. The flow of the process to memorize | store is shown.

  In FIG. 4, when a state change and an event occur, an event occurrence notification including log information is transmitted from the device state related control task 22 to the application task 21 (step S1). Further, a message is transmitted from the call control task 24 to the application task 21 (step S2), and a message is transmitted from the file-related control task 25 to the application task 21 (step S3).

  The application task 21 receives the message notified from the device state related control task 22 and transmits the log information notification to the log control task 23 (step S4). Further, the application task 21 receives the message notified from the call control task 24, and transmits the log information notification to the log control task 23 (step S5). Further, the application task 21 receives the message notified from the file-related control task 25, and transmits the log information notification to the log control task 23 (step S6).

  Then, the log control task 23 stores the log information from each task (that is, the device state related control task 22, the call control task 24, and the file related control task 25) in the volatile memory device 15 (step S7). .

  FIG. 5 is a flowchart showing a flow of log storage performed at a regular time designated in advance by the radio base station apparatus of the present invention. In this figure, when the device driver 29 shown in FIG. 3 is composed of three drivers, driver A, driver B, and driver C, each driver (driver A, driver B, and driver C) collects periodically. The flow of the process which memorize | stores the performed hardware information in the volatile memory device 15 as log information is shown.

  First, the hardware information collection task 27 periodically collects hardware information designated for analysis in advance from the driver A at regular intervals (step S11). Further, the hardware information collection task 27 periodically collects hardware information designated in advance for analysis from the driver B at regular intervals (step S12). Further, the hardware information collection task 27 periodically collects hardware information designated in advance for analysis from the driver C at regular intervals (step S13).

  Then, the hardware information collection task 27 periodically sends the hardware information collected from each driver (that is, driver A, driver B, and driver C) as a log information notification to the log control task 23 (step S14). ). Then, the log control task 23 stores the log information from each driver (that is, driver A, driver B, and driver C) in the volatile memory device 15 (step S15).

  FIG. 6 is an image diagram showing a log information storage method when a failure occurs, which is performed by the radio base station apparatus of the present invention. As shown in FIG. 6, log information (for example, xxx...) Collected at the occurrence of each event or periodically is stored in a fixed area of the volatile memory device 15. When a failure occurs, the log information (for example, xxx...) Is transferred from the fixed area of the volatile memory device 15 to the nonvolatile memory device 16 and stored therein.

  FIG. 7 is a diagram showing a flow of storing log information in a nonvolatile memory device when a failure occurs, which is performed by the radio base station apparatus of the present invention. In FIG. 7, when a failure is detected in task A, task A calls a failure report function (step S21), and transmits a notification message of the occurrence of the failure to device state related control task 22 in the failure report function (step S21). S22).

  Then, the device state related control task 22 transmits a log information acquisition request message before the occurrence of the failure to the log control task 23 (step S23). Then, the log control task 23 performs a process of storing each event information and periodic information stored in the volatile memory device 15 in the nonvolatile memory device 16 (step S24). As a result, the log control task 23 transmits a response message to the effect that the log information before the failure has been acquired to the device state related control task 22 (step S25).

  Thus, since the log information at the time of failure occurrence is transferred from the volatile memory device 15 to the nonvolatile memory device 16 and stored, if a failure occurs in a certain wireless base station device, the nonvolatile memory of that wireless base station device By extracting log information from the device 16, failure analysis can be performed and appropriate recovery processing can be executed. Furthermore, a failure reproduction test can be performed based on log information extracted from the nonvolatile memory device 16.

  FIG. 8 is a diagram showing the contents of failure log information acquired by the nonvolatile memory device in the radio base station apparatus of the present invention. Failure log information means that when a failure occurs in a radio base station device, device state related information, call control information, file related information, host device request event log information, etc. are left as log information when a failure occurs. This is information for creating a state where the failure can be easily reproduced.

  Incidentally, although there are three patterns of failure / critical / major / minor, failure log information should be kept for any failure. The reason for this is that, even if it is a trivial failure, a state different from the normal state occurs, and it is necessary to perform a corresponding analysis.

As shown in FIG. 8, the nonvolatile memory device 16 may acquire device state related information (device information, carrier information, etc.), call control information, file related information, and higher-level device request event log information as event information. it can. Further, the nonvolatile memory device 16 can acquire hardware register information as regular information.

  Among these pieces of information, all information other than the hardware register information of the periodic information (that is, device state related information, call control information, file related information, and upper device request event log information) performs failure analysis. Used as information for. For example, based on the device state related information, hardware information, software information, event information, etc. in the radio base station device in which the failure has occurred are acquired, and these information (that is, hardware information, software information, event information) is obtained. Failure analysis can be performed with reference to the above.

  All information other than hardware register information (device state related information, call control information, file related information, and host device request event log information) is converted into failure scenario information for maintenance tool event scenarios. A failure reproduction test can be performed using the maintenance tool 19 on the basis of the event scenario that has been performed and converted. That is, as shown in FIG. 2, a failure reproduction test is performed in a pseudo manner by connecting the maintenance tool 19 to the wired communication control unit 12 of the wireless base station apparatus and issuing an event from the maintenance tool 19. Can do.

  For example, by issuing an event from the maintenance tool 19 based on the file-related information in the failure log information shown in FIG. 8, it is possible to perform a corresponding failure reproduction test.

  In addition, regarding the specific processing contents at the time of failure reproduction, as a current assumption, when reproducing the failure, it is necessary to make the wireless base station device transition to a failure occurrence state in an artificial manner, and the environment can be externally input. A maintenance tool 19 (see FIG. 2) that can change the state is required. Specifically, the radio base station apparatus is activated as usual, a scenario created based on the information acquired at the time of failure occurrence is flowed from the maintenance tool 19, and a failure occurrence state is simulated and analyzed.

  FIG. 9 is a configuration diagram of failure log information handled by the nonvolatile memory device in the radio base station apparatus of the present invention. The failure log information includes failure information “1”, device state related information, call control information, file related information, host device request event log information, pre-failure hardware information, and the like. The failure information “2” has a similar configuration. Note that the pre-failure hardware information is, for example, all information periodically acquired from 5 seconds before the failure occurrence to the failure occurrence time.

  The failure information “1” includes the year, month, day, hour, minute, second, and task ID, failure factor code, failure state transition type, failure level, failure factor detailed information 1 and failure factor details. It consists of information 2, source file information, line number, and the like. The failure information “2” has the same configuration.

  In this way, at the time of the failure occurrence, the log information from the predetermined time before the failure occurrence to the failure occurrence time is stored again in the nonvolatile memory device 16 from the volatile memory device 15, thereby causing the radio base station apparatus in which the failure has occurred. Necessary information can be obtained from the failure analysis. Furthermore, failure analysis can be performed by reproducing the state at the time of failure based on the acquired information.

It is a block diagram which shows the schematic structure of the radio | wireless communications system for the radio base station apparatus of this invention to implement | achieve a failure analysis function. It is an internal block diagram of the radio base station apparatus shown in FIG. It is a block diagram of the software task in the radio base station apparatus shown in FIG. It is a flowchart which shows the flow of the log memory | storage at the time of the state change and event generation which the radio base station apparatus of this invention performs. It is a flowchart which shows the flow of the log storage performed by the radio base station apparatus of this invention in the regular time designated beforehand. It is an image figure which shows the storage method of the log information at the time of the failure generation which the wireless base station apparatus of this invention performs. It is a figure which shows the storage flow to the non-volatile memory device of the log information at the time of the failure generation which the radio base station apparatus of this invention performs. It is a figure which shows the content of the failure log information which the non-volatile memory device in the radio base station apparatus of this invention acquires. It is a block diagram of the failure log information which the non-volatile memory device handles in the wireless base station apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1-1 to 1-n ... Portable terminal, 2-1 to 2-n ... Wireless base station apparatus, 3 ... Concentrator, 4 ... Switch, 5 ... Maintenance terminal, 11 ... Wireless communication control part, 12 ... Wired communication control Part,
DESCRIPTION OF SYMBOLS 13 ... Central processing part, 14 ... Software, 14a ... Program part, 14b ... Memory part, 14c ... OS part, 15 ... Volatile memory device, 16 ... Nonvolatile memory device, 17 ... Clock part, 18 ... Power supply part, 19 ... Maintenance Tool, 21 ... Application task, 22 ... Device state related control task, 23 ... Log control task, 24 ... Call control task, 25 ... File related control task, 26 ... Middleware,
27 ... Hardware information collection task, 28 ... Converter, 29 ... Device driver, 30 ... WINDNET, 31 ... Common library, 32 ... OS, 33 ... IPL

Claims (1)

A radio base station apparatus having a failure analysis function for dealing with the occurrence of a communication failure,
A volatile memory device that stores log information indicating history contents when a regular time or event occurs that is designated in advance during normal operation; and
Non-volatile storage that stores time-limited log information from the predetermined time before the occurrence of the communication failure to the occurrence time of the communication failure among the log information recorded in the volatile memory device when the communication failure occurs A memory device,
The radio base station apparatus, wherein the fault analysis function obtains the time-limited log information from the nonvolatile memory device and realizes fault analysis when a communication fault occurs.

Images