KR20000060232A - Method for measuring load rate of call control processor in base station controller of digital mobile communication system - Google Patents

Abstract

PURPOSE: A method for measuring a using rate of a call control processor(CCP) in a digital mobile communication base station controller(BSC) system is provided to accurately measure the using rate of the CCP independent of a time error by obtaining an entire counting value during a measurement period using a function which returns a counting value of all items measured by an OS(Operating System) of a CCP at every 40 microsecond to use an actual value when measuring the using rate of the CCP. CONSTITUTION: A function loadcheck1() which returns a counting value of all items measured by CROS(Concurrent Real-time Operating System) at every 40 microsecond is called, and a counting value according to an item is returned and the returned counting value is stored in a buffer(ST11). If 10 seconds are passed after the function loadcheck1() is called, the function loadcheck1() is called again and a counting value according to an item is returned and the returned counting value is stored in the buffer(ST12,ST13). A difference value between the counting value returned by the function accessed ahead and the counting value returned by the function accessed lastly is calculated(ST14,ST15). A rate between a counting value to an idle state of a CPU among counting values according to items and the counted entire counting value is calculated for obtaining an idle rate of the CPU, and a using rate of the CPU is calculated using the idle rate of the CPU and a rate between the counting value according to items and the entire counting value is calculated for calculating a using rate according to items(ST16-ST18).

Description

Method for measuring load rate of call control processor in base station controller of digital mobile communication system}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to call rate processor (CCP) load rate measurement of a base station controller (BSC) operating in a digital mobile communication system. The present invention relates to a method for measuring a call processor load ratio of a digital mobile communication control station system, which minimizes possible errors and accurately and reliably measures the load ratio of a CPP.

In general, a digital mobile communication system is a communication system that allows a subscriber to receive a communication service while moving or stopping. Such a digital mobile communication system includes a base transceiver station (BTS) for wireless connection with a mobile mobile station; A control station (BSC) that manages the BTS; A base station manager (BSM) which manages and maintains the BTS and the BSC; Mobile Switching Center (MSC) that performs a switching function for the mobile communication service signal from the BSC to provide a mobile communication service to each subscriber.

In such a general digital mobile communication system, performance analysis and statistical data collection and output are performed in each BSC for system operation maintenance and system design.

In other words, a parallel real-time operating system (CROS) is operated in the CCP in each BSC, and statistical block software is executed by the operation of the CROS. The CCP statistics block software receives, collects and outputs the collected statistical data every 10 minutes. The minimum collection unit for this statistical data is 10 minutes, and the CCP load factor measurement is one of them. CCP load factor calculation uses the function provided by CROS to get basic data and then calculates the load factor based on the data.

In the CCP load factor calculation, the CCP idle state can be measured using a function provided by CROS, and the CCP load value can be calculated using the CCP idle state measurement value to calculate the CCP load factor. do. In this case, the CCP idle state means that the CPU (Central Processing Unit) of the CCP is available or there is no actual work, and that one of the CPUs is in a standby state due to a difference in computation processing time and data input / output processing time. it means.

A conventional method for calculating such a CCP load ratio is described below.

First, CROS running in CCP provides a loadcheck () function, which returns the CPU idle counting value incremented up to the current time. Therefore, the CCP statistics block calls this loadcheck () function and returns and saves the CPU idle counting value that has been increased so far.After 10 seconds, the measurement cycle, this loadcheck () function is called again to increase the CPU idle counting value. Is returned. Using these two idle counting values, that is, subtracting the first idle counting value from the second idle counting value, the pure idle counting value for 10 seconds is obtained.

CROS operating in CCP measures CPU status of CCP every 40㎲ and checks whether CPU status at that time is used to perform work or idle status, and increases idle counting value by 1 only when idle status. , This loadcheck () function returns this counting value. Therefore, the theoretical maximum counting value that can be returned by calling this loadcheck () function in CCP statistics block is counted once every 40 ms, so it becomes 25000 in 1 second and 250000 in 10 seconds.

In this way, the CCP statistics block calculates the CCP load factor using the idle count value for 10 seconds and the theoretical value that CROS can count maximum for 10 seconds. so

CPU idle rate

= (Pure idle counting value for 10 seconds / 250000 (total counting value for 10 seconds)) * 100

Become,

CPU using rate (CPU load rate) = 100-CPU idle rate

Becomes

However, the conventional CCP load ratio measurement method that calls the loadcheck () function every 10 seconds in the CCP statistics block and calculates the CPU idle rate for 10 seconds by using the counting value returned from the called function has a theoretical value. It is difficult to measure the exact CCP load factor because it can be used and time error can occur. That is, whether the CROS OS (Operating System) measures the CPU state every 40 ms, measuring 250000 in 10 seconds, and whether the CCP statistics block calls the loadcheck () function exactly every 10 seconds, and loadcheck ( There is a lot of time for error, such as how long it takes to execute a function. Therefore, it is difficult to accurately measure the CCP load ratio, and the reliability of performance data required for performance analysis and long-term design of the system is deteriorated.

In addition, the loadcheck () function returns only the CPU idle counting value, so it can measure only the total load factor of the CCP, and cannot measure the load factor of the detailed items of the CCP CPU.

Therefore, the present invention has been proposed to solve the conventional problems as described above, the object of the present invention is

By using the function that returns the counting value of every item measured by the operating system (OS) of the CCP every 40 ms, the actual value, not the theoretical value, is used to determine the CCP load factor measurement. The present invention provides a method for measuring call processing processor load rate of a digital mobile communication control station system, which enables accurate CCP load rate measurement.

Another object of the present invention is not to measure the total load factor of the CCP by using a function that returns the counting value of all items measured by the operating system (OS) of the CCP every 40 ms, but to measure the detailed item load ratio of the CCP. The present invention provides a method for measuring a call processor load ratio of a digital mobile communication control system.

In order to achieve the above object, the CCP load factor measuring method of the digital mobile communication control system according to the present invention,

A first step of calling a function that returns a counting value of all items measured by the operating system of the CCP every 40 ms and receiving the counting value of each item and storing the counting value in the buffer;

A second step of returning a counting value for each item by calling the function again after 10 seconds have elapsed after the function call;

Compute the difference value between the item counting value returned by the first called function and the item counting value returned by the later called function, and add the calculated counting difference value to the total counting value for 10 seconds. Calculating a second step;

The idle rate of the CPU is obtained by calculating a ratio between a counting value for the central processing unit (CPU) idle state of the CCP and the calculated total counting value among the counting values for each item, and calculating the CPU idle. The method is characterized by calculating a CPU load rate using a rate, and performing a third step of calculating a load ratio for each item by calculating a ratio between the counting value for each item and the total counting value.

The counting value of all items returned by the function is

A counting value IDLE that is counted when the CPU is idle when the operating system of the CCP checks the state of the CPU every 40 ms, a counting value CROS that is counted when the CPU is in the running state of the operating system, and the CPU Is a counting value (IPC) that is counted when the interprocessor communication or interprocess communication is performed within the CCP, and the counting counted when the CPU executes an operator arbitrary command. Value USER, a counting value DBKG counted if the CPU accesses and processes the database of the CCP, and counting if the CPU is loading a program to be performed in a base station, vocoder, etc. A counting value CPLX, a counting value CCOX counted if the CPU performs a call processing function, and a CPU performing a state management function of the entire BSC. Counting value (CSHX) if counting state, counting value (CFMX) counting if fault management is performed, counting value (CDIAX) counting if each device test state, counting counting if resource management state The counting value CRAX and the shape management state are characterized in that the counting value CRMX.

The CPU using rate calculation method may be performed by subtracting the calculated CPU idle rate from 100.

The CPU using rate calculation method may include adding the load rates of all items except the CPU idle rate among the calculated load rates of each item.

1 is a view showing a method for obtaining a counting value for each item using a function applied to the present invention;

2 is a flowchart showing a method for measuring a call processor load ratio in a digital mobile communication control station system according to the present invention;

Hereinafter, the CCP load ratio measuring method of the digital mobile communication control system according to the present invention will be described in detail with reference to the accompanying drawings.

The conventional CCP load factor measurement method uses a loadcheck () function that returns only a CPU idle counting value, but the CCP load factor measurement method according to the present invention uses a loadcheck1 () function. The CPU of a CCP can have a total of 12 states, and must stay in one state for a certain time and then transition to another state. Therefore, the OS of the CCP, which checks the state of the CPU every 40 ms, counts the counting value for the corresponding CPU state at that time. Therefore, the OS of the CCP, or CROS, counts a counting value for one of 12 items every 40 ms. The loadcheck1 () function returns the counting value for all items.

Here, the counting value of the item returned from the loadcheck1 () function is described. If the CPU is idle when CROS measures the CPU status of the CCP every 40 ms, the counting value counted is IDLE. CROS is a counting value that is counted when the CPU is in the CROS execution state, and IPC is counted when the CPU is in the interprocessor communication (IPC) state in which the CPU performs inter-processor communication or inter-process communication within the CCP. Value. USER is a counting value that is counted when the CPU executes an operator's arbitrary command, DBKG is a counting value that is counted when the CPU accesses and processes the database of the CCP, and CPLX is a CPU that must be performed at a base station or vocoder. Counting value to be counted when the program to be loaded is counted, CCOX counting value to be counted if the CPU is performing call processing function, CSHX is counting value to be counted if the CPU is to perform state management function of the entire BSC. CFMX is the counting value counted if the failure management is performed, CDIAX is the counting value counted for each device test state, CRAX is the counting value counted for the resource management state, and CRMX is counted if the configuration management status is counted. Counting value.

Therefore, the CPU of the CCP is necessarily one state at any moment in the above state, and CROS, which checks the state of the CPU every 40 ms, counts one counting value among 12 item counting values every time the state is checked. Thus, the loadcheck1 () function, which returns the counting value of all items, can be used to calculate the total counting value for a particular measurement period.

2 is a flowchart illustrating a method of measuring a CCP load ratio of a digital mobile communication control station system according to the present invention.

As shown, a first step (ST11) of calling the function loadcheck1 () that returns the counting value of all items measured by CROS every 40 ms and receiving the counting value for each item in a buffer; A second step (ST12, ST13) of returning a counting value for each item by calling the loadcheck1 () function again after 10 seconds have elapsed after the call of the loadcheck1 () function; Compute the difference value between the item counting value returned by the first called function and the item counting value returned by the later called function, and add the calculated counting difference value to the total counting value for 10 seconds. Calculating second steps ST14 and ST15; The idle rate of the CPU is obtained by calculating a ratio between the counting value for the idle state of the CPU and the calculated total counting value among the counting values for each item, and calculating the CPU using rate using the CPU idle rate. A third step (ST16-ST18) is performed to calculate a load factor for each item by calculating a ratio between a counting value and the total counting value.

Referring to the method of measuring the CCP load ratio of the digital mobile communication control station system according to the present invention as follows.

First, CROS calls the function loadcheck1 () which returns the counting value of all items measured every 40 ms and stores the return value in the buffer (ST11). The counting value for each item returned is IDLE, CROS, IPC, USER, DBDG, CPLX, CCOX. CSHX, CFMX, CDIAX, CRAX, CRMX. After checking whether 10 seconds, which is a measurement period, has elapsed from the time when the loadcheck1 () function is called, it is checked using a 10 second timer. After 10 seconds (ST12), the loadcheck1 () function is called again. Thus, the counting value of each item is returned and stored in the buffer (ST13). In this case, the returned item is the same as the one that was just returned. For 10 seconds, CROS measures the status of the CPU every 40 ms and increases the counting value of the corresponding item by one.

The CCP statistics block then calculates the counting value for each item counted for 10 seconds. At this time, the difference value between the item counting value returned by the loadcheck1 () function called first and the item counting value returned by the loadcheck1 () function called 10 seconds later is calculated. That is, the counting difference value for each item is calculated as follows (ST14).

First return value-Return value after 10 seconds = value counted for 10 seconds

F_IDLE-S_IDLE = IDLE

F_CROS-S_CROS = CROS

F_IPC-S_IPC = IPC

F_USER-S_USER = USER

F_DBKG-S_DBKG = DBKG

F_CPLX-S_CPLX = CPLX

F_CCOX-S_CCOX = CCOX

F_CSHX-S_CSHX = CSHX

F_CFMX-S_CFMX = CFMX

F_CDIAX-S_CDIAX = CDIAX

F_CRAX-S_CRAX = CRAX

F_CRMX-S_CRMX = CRMX

The counting difference value for each item is calculated and the sum is added to calculate the total counting value (ST15). In other words,

Total counting value (TOTAL) = IDLE + CROS + IPC + USER + DBDG + CPLX + CCOX + CSHX + CFMX + CDIAX + CRAX + CRMX

Becomes

Thus, the present invention can obtain the total counting value counted every 40 ms by the CPU of the CCP using the item counting value returned by this function by calling the loadcheck1 () function at 10 second intervals. It is not necessary and can therefore be said to be independent of time.

FIG. 1 illustrates a method of obtaining a counting value using a loadcheck1 () function, and shows that the CCP load ratio measurement can be performed independently of time. Conventionally, the count value that CROS can count to the maximum for 10 seconds was set to 250000, and the load factor was calculated using this value. So we had to get back the CPU idle counting value for exactly 10 seconds. However, it was difficult to get accurate CPU idle counting value because of time error, so accurate CCP load factor measurement was difficult. However, the present invention calculates the counting value that the maximum number of CROSs can count for 10 seconds by adding up the counting value of each item, thereby not receiving much time.

When the total counting value is calculated, the load factor of each item including the CPU idle rate is calculated (ST16). In other words,

IDLE rate = (IDLE / TOTAL) * 100

CROS rate = (CROS / TOTAL) * 100

IPC rate = (IPC / TOTAL) * 100

USER rate = (USER / TOTAL) * 100

DBKG rate = (DBKG / TOTAL) * 100

CPLX rate = (CPLX / TOTAL) * 100

CCOX rate = (CCOX / TOTAL) * 100

CSHX rate = (CSHX / TOTAL) * 100

CFMX rate = (CFMX / TOTAL) * 100

CDIAX rate = (CDIAX / TOTAL) * 100

CRAX rate = (CRAX / TOTAL) * 100

CRMX rate = (CRMX / TOTAL) * 100

Therefore, the "using rate of the CCP" is calculated by adding the rates of the above items except "100-CCP idle rate" or "IDLE rate". Thus, the present invention calls a function that returns the counting value of all items counted every 40 ms at 10 second intervals, and calculates the accurate load ratio of the entire CCP regardless of temporal error by using the difference between each counting value returned. Will be. In addition, it is possible to accurately calculate not only the load rate of the entire CCP but also the load rate of the detailed items of the CCP.

As described above, the CCP load factor measurement method of the digital mobile communication control station system according to the present invention uses a function that returns a counting value of all items measured by an operating system (OS) of the CCP every 40 ms. By obtaining the total counting value during the measurement cycle, the actual value, rather than the theoretical value, is used for the CCP load factor measurement, which ensures accurate CCP load factor measurement regardless of time error.

In addition, the CCP OS (Operating System) uses a function that returns the counting value of every item measured every 40 ms. It can be used as a basic data for understanding performance and improving performance.

Accurate CCP load factor measurements help improve the performance of code division multiple access (CDMA) systems by increasing the reliability of the performance data required for heavy system design.

Claims (5)

A method of measuring a load rate of a call control processor (CCP) that performs a call processing function in a digital mobile communication control station system, A first step of calling a function of returning counting values of all items measured by the operating system of the CCP every specific period, and receiving a counting value of each item and storing the counting value of each item in a buffer; A second step of returning a counting value for each item by calling a function after a specific measurement period has elapsed after the function call; Compute the difference value between the item counting value returned by the first called function and the item counting value returned by the later called function, and add the calculated item counting difference to sum the total counting during a specific measurement period. Calculating a value; The idle rate of the CPU is obtained by calculating a ratio between a counting value for the central processing unit (CPU) idle state of the CCP and the calculated total counting value among the counting values for each item, and calculating the CPU idle. A third step of calculating a CPU load rate using the rate and calculating the ratio between the item counting value and the total counting value to calculate the item load rate is performed. To determine the call processing processor (CCP) load rate of The method of claim 1, And the specific period represents 40 ms, and the specific measurement cycle represents 10 seconds. The method of claim 1, wherein the counting value of all items returned by the function is A counting value IDLE counted when the CPU is idle when the operating system of the CCP checks the state of the CPU at each specific period, and a counting value CROS counted when the CPU is in the running state of the operating system; A counting value (IPC) counted when the CPU is in an interprocessor communication (IPC) state for performing inter-processor communication or inter-process communication within the CCP, and counting when the CPU executes an operator arbitrary command. A counting value USER, a counting value DBKG counted when the CPU accesses and processes the database of the CCP, and a loading state of a program to be performed at the base station, vocoder, etc. Counting value (CPLX) is counted, the counting value (CCOX) is counted if the CPU is performing a call processing function, the CPU is the state management function of the entire BSC Counting value (CSHX) if counting status, counting count value (CFMX) counting if performing fault management, counting value counting (CDIAX) if counting each device, if resource management status A counting value CRAX and a counting value CRMX are counted when the configuration management state is counted. The method of claim 1, wherein the CPU load rate calculation method comprises: And subtracting the calculated CPU idle rate from 100. The method of claim 1, wherein the CPU load rate calculation method comprises: CCP load ratio measurement method of the digital mobile communication control system, characterized in that the sum of the load ratio of all items except the CPU idle rate among the calculated load ratio of each item.