KR100560569B1 - Method for managing timer of system process in base statoin manager - Google Patents

Abstract

The present invention relates to a digital mobile communication system for driving a timer for obtaining time information and operating multiple processes for performing periodic processing at a predetermined time or periodically executed at a specific time at the request of an operator. In the base station manager (BSM), to provide a method for managing the system process timer of the base station management unit to reduce the load caused by running the timer in each process, the present invention is to provide a timer in each process By running a process that manages the timer as a daemon without running each one, and starts the timer only once in this daemon process, it sends an operating time to each process through IPC (Inter Process Communication) or sends a specific time. Process to be created in Sikimeuro driven by a timer in each process, it is possible to prevent a load from. As a result, system performance can be improved by reducing system load.

Description

Method for managing timer of system process in base statoin manager}             

1 is a block diagram of a general digital mobile communication system;

2 is a flowchart illustrating a system process timer management method of a base station management unit according to the present invention;

<Explanation of symbols for the main parts of the drawings>

1: BTS 2: BSC

3: MSC 4: BSM

5: BSM operation maintenance department

The present invention relates to a method of managing a timer used by each process in a base station manager (BSM) of a digital mobile communication system to obtain time information. Particularly, each base station manager (BSM) A process for managing a system process timer of a base station management unit which allows a process to manage a timer used by a process to know the current time, thereby preventing an increase in system load caused by executing a system call for time information in each process. will be.

1 is a block diagram of a general digital mobile communication system.

As shown, a base station transceiver subsystem (BTS) 1 which is responsible for radio connection with a mobile station; A base station controller (BSC) 2 which manages the BTS 1; A mobile switching center (MSC) 3 for exchanging mobile communication service signals from the BSC 2 to provide mobile communication services; A base station manager (BSM) 4 for operation management and maintenance of the BTS 1 and the BSC 2; It consists of a BSM Operation & Maintenance Center (5) for managing the BSM (4).

In general, UNIX is an Operating System (OS) developed by the AT & T Bell Labs in the United States, adopting time-sharing control and supporting the execution of multiple users and multiple tasks at the same time. The BSM (4) is a system running under such a UNIX environment, and when the operator operates the BSC (2) and BTS (1), and performs the periodic or daily monitoring function to check the status and performance of the system In order to collect statistics and know the detailed status of devices in the system, it is necessary to periodically check the status of the system such as reservation and automatic diagnosis. Processes that handle each of these functions know the time and must be driven at a preset time or at a periodic time. To do this, these processes periodically obtain alarm information using an alarm system call, a UNIX system call. However, in a UNIX environment, one process can register only one signal, and when one process registers the same signal, the last registered signal is registered in the process table. In this case, the signal means another process to be generated by the kernel process, and the process table is the part where the job required to process the kernel is recorded. The kernel is the core part of the UNIX system configuration and is called the OS.

When a signal is registered in the process table, the kernel processes it and creates as many processes as the operator requires processing. Each process created in this way performs a function processing for an operator request. The OS exchanges a work environment between processes through a scheduling task in which CPUs are allocated to a running time slice allocated to a process registered in a process table.

However, if you create as many processes as required by the operator to check the status and performance of the system at the request of the operator, and create a process that informs the time information to obtain the current time information from each created process, the CPU This increases the number of processes that need to be handled. The increase in the number of processes requiring processing of the OS imposes a load on the OS kernel for scheduling tasks, and the processes to be operated are also reduced in inverse proportion to the number of processes waiting for execution of the time slice to be allocated. As a result, the BSM has a problem that unnecessary load is applied to the inherent function processing of the system.

Accordingly, the present invention has been proposed to solve the system load increase problem caused by creating a process that tells the time information to obtain time information in each process generated by the request of the operator,

An object of the present invention is to run a process to manage the timer with time information as a daemon (daemon) to check the current time every minute to notify the process of periodic function processing time using IPC to process that requires periodic function processing Or by creating a corresponding process to handle an operator request function, thereby minimizing the number of processes and reducing the load on the system.

System process timer management method of the base station management unit according to the present invention to achieve the above object,

The timer management daemon process, which runs as a daemon and manages the timer, runs a timer to check the current time, and periodically / manages information on the scheduled start time of the diagnostic processing process scheduled by the operator. A first step of checking an execution time of each process by referring to a scheduled diagnosis processing table and a process management table managing information on a driving time and period of a process requiring periodic execution;

If the current time is the execution time of the checked process, the method configuration feature is to send a message for performing a function to the process or perform a second step of forking the process.

The second step is to fork the process for system diagnostic processing through a pipe (PIPE) if the current time is a reserved drive time of the process for system diagnostic processing at the request of the operator, and the base station relay line every odd number of minutes. The monitoring time is notified to the link failure and status monitoring process through the message queue, and the collection time is notified to the statistics process that collects system performance data every 10 minutes.

Hereinafter, with reference to the accompanying drawings, the system process timer management method of the present invention, the base station manager as described above in detail.

2 is a flowchart illustrating a timer managing method according to the present invention.

As shown, periodic / scheduled diagnostics in which a timer management daemon process executed as a daemon runs a timer to inspect the current time, and manages information on the scheduled start time of the diagnostic processing process scheduled by the operator. A first step (ST11-ST12) of checking the execution time of each process by referring to a process table and a process management table managing information on driving time and period of a process requiring periodic execution; If the current time is the execution time of the checked process, a second step (ST13-ST18) is performed by sending a message to the process or forking the process.

The second step ST13-ST18 forks a process for system diagnostic processing through a pipe PIPE if the current time is a reserved driving time of the process for system diagnostic processing at the request of the operator (ST13). (ST14), every odd minute (minute% 2 == 1; current time divided by two, the remainder being 1), the failure time of the base station's trunk link and the status monitoring process is notified of the monitoring time through the message queue ( ST15 and ST16), the statistical process of collecting system performance data every 10 minutes is notified of the collection time through the message queue (ST17 and ST18).

Referring to the system process timer management method of the base station management unit according to the present invention as follows.

Each process that requires current time information, such as a process that processes periodic operator commands at a given time, a process that runs periodically at a specified time, a process that requires periodic operator command processing times, and a process for collecting system performance data Although conventionally operated to drive a timer to obtain time information, the present invention creates a process for managing this timer, and executes this process as a daemon, so that the process must be driven correctly at the time of operation. Or transmit the current time information to a process requiring the current time information. So instead of running timers in each process, they can only be run once in the timer management daemon process.

The timer management daemon process thus generated registers a timer and checks the current time (ST11).

The timer management daemon process refers to a periodic / scheduled diagnostic processing table that manages information on a running time of a process set by an operator, and a process management table that manages information on execution times of processes requiring periodic execution. In step 12, the process to be driven at a specific time and the process requiring time information are identified.

So, for processes that require periodic operator command processing time, which is referred to in the periodic / scheduled diagnostic processing table, the timer management daemon process must be able to process functions at the time requested by the operator. Fork the process through a pipe (PEPE) (ST13, ST14).

And timers for every odd number of minutes (minute% 2 == 1; time divided by 2 divided by 2 for the current time) for the failure and status monitoring process of the base station relay line link, referred to in the process management table. The management daemon process notifies the monitoring time through the message queue (ST15, ST16). Thus, since the failure of the base station relay line link and the state monitoring process do not need to run a timer to obtain every odd number of information, the load caused by the timer is removed.

And for a statistical process that collects system performance data every 10 minutes, referenced in the process management table, every 10 minutes (minute% 10 == 0; the time when the current minute is divided by 10 and the remainder is zero). Each time, the timer management daemon process notifies the collection time through the message queue (ST17, ST18). Therefore, the statistical process does not need to run a timer to obtain the collection time information, thereby eliminating the load associated with the timer.

The timer management daemon process, which manages this summer, is started as a background task and continues to run until the system is shut down, which has the same effect as running the timer directly on processes that require it to run. give. And because each process does not run timers directly, it can increase the frequency of allocating processing time slots to each process, thereby improving system performance.

As described above, the system process timer management method of the base station management unit according to the present invention provides a process that requires periodic function processing by running a process that performs timer management only as a daemon, checking the current time every minute. By notifying periodic function processing time by using Inter Process Communication (IPC) or creating a corresponding process, the timer is managed only once in the timer management daemon process without running a timer for each process requiring current time information. Reduce the load due to timer operation.

In addition, by reducing the number of processes operated in the base station manager (BSM) in which multiple processes are operated, the processing time slot allocation frequency is increased for each process, thereby improving system performance.

Claims (2)

A base station management unit of a digital mobile communication system which drives a timer for obtaining time information, and operates multiple processes for periodically processing at a predetermined time or a process periodically executed at a specific time according to an operator's request. Base Statoin Manager (BSM), The timer management daemon process, which runs as a daemon and manages the timer, starts a timer to inspect the current time, and periodically manages information on the reserved driving time of the diagnostic processing process reserved by the operator. A first step of checking execution time of each process by referring to a scheduled diagnosis processing table and a process management table managing information on driving time and period of a process requiring periodic execution; And if the current time is the execution time of the checked process, performing a second step of transmitting a message for performing a function to the process or forking the process. The method of claim 1, wherein the second step, If the current time is the reserved driving time of the process for system diagnostic processing at the request of the operator, fork the process for system diagnostic processing through a pipe, and the base station relay line link failure and status monitoring process every odd number of minutes. And notifying the monitoring time through the message queue, and notifying the statistics process of collecting system performance data every 10 minutes through the queue of the message.

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