KR20020046627A - Device and method for controling load mobile bts/bsc system - Google Patents

Abstract

PURPOSE: An apparatus and a method for controlling overload in a mobile communication BS(Base Station)/BSC(Base Station Controller) system are provided to prevent call service from being interrupted due to an abnormal operation, such as system congestion caused by a wrong selection of an overload object. CONSTITUTION: If a control system driving part activates an overload control processor and initializes the overload threshold of a database(S1), an overload threshold input part judges whether a changed overload threshold is inputted from an operator terminal(S2). If the changed overload threshold is inputted, the overload threshold input part updates the overload threshold of the database(S3). The overload control processor checks a utilization rate for its own system, a seizure rate for call decoding resources, and an ATM cell utilization rate for each system link(S4). Then the overload control processor judges whether the operator selects an overload cause object dynamic selection method(S5). If the operator selects the overload cause object dynamic selection method, the overload control processor compares the checked rates with the overload threshold stored in the database and yields an overload object and an overload class(S6). Then the overload control processor executes an overload control operation according to the yielded overload class, and displays a result to the operator(S7).

Description

Overload control device and method in mobile communication base station / control station system {DEVICE AND METHOD FOR CONTROLING LOAD MOBILE BTS / BSC SYSTEM}

The present invention relates to an overload control apparatus and method in a mobile communication base station / control station system. More particularly, the present invention relates to a mobile communication base station for controlling overload of a base station, a control station, and an exchange station by selecting and selecting an overload-inducing object by class. An overload control apparatus and method in a control station system.

As is well known, in the mobile communication system, when the overload of the base station or the control station is controlled, the utilization rate of the control processor and the occupancy rate of the call resource are used as a criterion for determining the overload of the control processor or the call resource. The control station manager of the outbreak was notified so that the operator could be informed of the system overload.

The overload control method in the conventional mobile communication base station / control station system is determined by giving priority to any one of a control processor and a call resource in selecting an overload target when an overload occurs and enters overload control. At this time, if the priority is given to the call resource, if the overload occurs in both the control processor and the call resource, since the priority is in the call resource, even if the call resource occupancy is lower than the control processor utilization, the call resource may be overloaded. Select to control overload.

However, the overload of the control processor, which overloads the use of the system with less than the call resource occupancy, may cause the system to behave abnormally, such as congestion. have.

Another problem is that a call proposal cannot be made regarding the congestion of an ATM (Asynchronous Transfer Mode) cell of a link between a control station and a base station.

Accordingly, the present invention has been made to solve the above-described conventional problems, and an object of the present invention is not only to prevent call service from being interrupted by abnormal operation such as congestion, etc. due to wrong overload target selection, but also by a base station, An overload control apparatus and method in a mobile communication base station / control station system for stably operating call processing between a control station and an exchange station is provided.

In order to achieve the above object, the overload control device in the mobile communication base station / control station system includes: an overload threshold input unit for outputting after receiving a changed overload threshold value from an operator terminal;

A database for storing the threshold of the overload for each grade when the changed overload threshold is input through the overload threshold input unit;

After overhauling the system utilization between the self and the call processing subblocks, the occupancy rate of the call decoding resources, and the ATM OAM cell utilization of the link between the systems, the overload class is calculated based on the overload threshold stored in the database. An overload control processor that selects and performs a corresponding overload control operation and simultaneously displays the result to the operator through the BSM; And

And a control system driver for starting the overload control processor and initializing a threshold of the overload of the database.

In addition, in order to achieve the above object, an overload control method in a mobile communication base station / control station system includes a first step in which a control system driver starts an overload control processor and initializes an overload threshold of a database;

A second step of determining whether an overload threshold input unit receives a changed overload threshold from an operator terminal;

If the changed overload threshold is not inputted from the operator terminal in the second step, the process proceeds to the second step, and if the changed overload threshold is input from the operator terminal, the overload threshold input unit updates and applies the overload threshold of the database. Third step;

A fourth step of the overload control processor checking its system utilization rate, occupancy rate of call decoding resource, and ATM OAM cell utilization rate of the link between each system;

A fifth step of determining, by the overload control processor, whether an operator has selected an overload-inducing object dynamic selection method;

When the operator selects a method for dynamically selecting an overload-inducing target in the fifth step, the overload control processor overloads the system usage rate, the occupancy rate of the call decoding resource, and the ATM OAM cell utilization rate of the link between the systems in the database. A sixth step of calculating an overload target and an overload rating in comparison with the threshold; And

The overload control processor performs an overload control operation according to the overload class, and at the same time, displays a result of the seventh step to the operator through the BSM.

1 is a functional block diagram showing an internal configuration of an overload control apparatus in a mobile communication base station / control station system according to an embodiment of the present invention;

2 is an operation flowchart showing an overload control method in a mobile communication base station / control station system according to an embodiment of the present invention;

3 is an operation flowchart showing the detailed operation of the third step (S3) in the overload control method in the mobile communication base station / control station system according to FIG.

4 is an operation flowchart showing the detailed operation of the sixth step (S6) in the overload control method in the mobile communication base station / control station system according to FIG.

FIG. 5 is an operation flowchart showing the detailed operation of the seventh step S7 in the overload control method in the mobile communication base station / control station system according to FIG. 2;

FIG. 6 is an operation flowchart showing the detailed operation of the eighth step S8 in the overload control method in the mobile communication base station / control station system according to FIG. 2.

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

100: overload control input 200: database

300: overload control processor 400: control system drive unit

Hereinafter, an overload control apparatus and method in a mobile communication base station / control station system according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a functional block diagram of an overload control apparatus in a mobile communication base station / control station system according to an embodiment of the present invention. The overload control apparatus in a mobile communication base station / control station system according to an embodiment of the present invention The overload threshold input unit 100, a database (Data Base) 200, the overload control processor 300, and the control system driver 400 is composed of.

The overload threshold input unit 100 receives a changed overload threshold from an operator terminal and outputs the changed overload threshold to the database 200. At this time, the overload threshold input unit 100 is applied at the same time to update the overload threshold of the database 200 overload threshold value input from the operator terminal from time to time.

In addition, the database 200 stores the threshold of the overload by grade when the changed overload threshold is input through the overload threshold input unit 100. At this time, the overload threshold stored in the database 200 is divided into normal grade, minor grade, major grade, and crystal grade, and the listed grades perform call control differently for each target. do.

In addition, the overload control processor 300 is referred to as the system utilization rate between itself and the call processing sub-block 10, the occupancy rate of the call decoding resource, and the ATM OAM (Operation Administration and Maintenance) of each link between the systems. .) After periodically checking the cell utilization rate, the overload class is calculated based on the overload threshold value stored in the database 200 to select an overload target, perform an overload control operation corresponding thereto, and simultaneously perform a base station manager (BSM). It serves to display to the operator.

In addition, the control system driver 400 operates the overload control processor 300 and at the same time initializes the threshold of the overload of the database 200.

Next, an operation process of the overload control apparatus and method in the mobile communication base station / control station system having the above configuration will be described with reference to FIG. 2.

First, the control system driver 400 operates the overload control processor 300 and initializes an overload threshold of the database 200 at step S1.

Then, the overload threshold input unit 100 determines whether the changed overload threshold is received from the operator terminal (S2).

Subsequently, when the overload threshold input unit 100 does not input the changed overload threshold value from the operator terminal (NO) in the second step S2, the process proceeds to the second step S2, while the overload threshold input unit 100 When the changed overload threshold is input from the operator terminal (YES), the overload threshold input unit 100 receives the changed overload threshold and updates and applies the overload threshold of the database 200 (S3).

Hereinafter, a detailed operation process of the above-described third step S3 will be described in more detail with reference to FIG. 3.

First, the overload threshold input unit 100 receives the changed overload threshold from the operator terminal (3-1).

Subsequently, after the overload threshold input unit 100 receives the changed overload threshold from the operator, the overload threshold input unit 100 updates the changed overload threshold in the database 200 and simultaneously applies it in real time (S3-2).

Then, the overload control processor 300 checks its own system utilization rate, occupancy rate of call decoding resource, and ATM OAM cell utilization rate of each inter-system link (S4).

Subsequently, the overload control processor 300 determines whether the operator selects the overload-inducing object dynamic selection method (S5).

Then, when the operator selects the overload-inducing object dynamic selection method in the fifth step (S5) (YES), the overload control processor 300, the system utilization rate, the occupancy rate of the call decoding resource, and the link between the systems The overload target and the overload grade are calculated by comparing the ATM OAM cell utilization rate of the cell with the overload threshold stored in the database 200 (S6).

Hereinafter, a detailed operation process of the sixth step S6 will be described in more detail with reference to FIG. 4.

First, the overload control processor 300 compares its own system utilization rate with the overload threshold value of the system utilization rate stored in the database 200 (S6-1).

Subsequently, the overload control processor 300 compares its system usage rate and derives an overload rating corresponding thereto (S6-2).

In addition, the overload control processor 300 compares the occupancy rate of the call decoding resource and the overload threshold value of the occupancy stored in the database (S6-3).

Subsequently, the overload control processor 300 compares the occupancy rate of the call decoding resource and derives the corresponding overload class (S6-4).

In addition, the overload control processor 300 compares the ATM OAM cell utilization rate of the link between the systems and the overload threshold of occupancy stored in the database 200 (S6-5).

Subsequently, the overload control processor 300 compares the ATM OAM cell utilization rates of the links between the systems and derives the corresponding overload class (S6-6).

Then, the overload control processor 300 compares its overload rating, the overload rating of the call decoding resource, and the overload rating for the ATM OAM cell utilization rate of the link between the systems (S6-7).

Subsequently, the overload control processor 300 calculates an object having a high overload rating (S6-8).

Then, when the overload control processor 300 calculates the overload target and the overload grade, the overload control processor 300 performs the overload control operation according to the corresponding overload grade and displays the result to the operator through the BSM (S7).

Hereinafter, a detailed operation process of the seventh step S7 will be described in more detail with reference to FIG. 5.

First, the overload control processor 300 displays the operator in blue without controlling the system call if the overload level is the normal level (S7-1).

Subsequently, when the overload level is a minor level, the overload control processor 300 controls the originating or incoming call and displays the green color to the operator (S7-2).

If the overload level is a major level, the overload control processor 300 controls the outgoing and incoming calls and displays it to the operator in yellow (S7-3).

Subsequently, when the overload level is a crystal level, the overload control processor 300 controls the call of incoming, incoming, and handoff, and displays it to the operator in red (S7-4). At this time, the overload control processor 300 is divided into a normal grade, a minor grade, a major grade, and a crystal grade, and the above-described grades can be arbitrarily applied by an operator.

For example, in the case of the call decoding degree resource share, less than 50% is represented by the normal grade, less than 70% by the minor grade, less than 80% by the major grade, and less than 90% by the crystal grade, while the control station Alternatively, the operator may change the class value according to the environment of the base station.

On the other hand, in the fifth step S5, if the overload triggering object priority selection method (NO), the overload control processor 300 compares the overload triggering object having a high priority with the overload threshold in the database 200. By performing the overload control operation according to the corresponding overload level corresponding to the display at the same time to the operator through the operator terminal (S8).

Hereinafter, a detailed operation process of the eighth step S8 will be described in more detail with reference to FIG. 6.

First, the overload control processor 300 determines whether the overload causing target among the system utilization rate, the occupancy rate of the call decoding resource, and the ATM OAM cell utilization rate of the link between the systems (S8-1).

Subsequently, if the trigger target is the system utilization rate in the eighth step (S8-1), the overload control processor 300, if the system utilization rate exceeds the overload threshold, the database 200 may use its system utilization rate. Compared to the overload threshold of the overload control operation according to the corresponding overload class, and at the same time the results are displayed to the operator through the BSM (S8-2).

On the other hand, if the trigger target is the occupancy rate of the call decoding resource in the 8-1 step (S8-1), the overload control processor 300, if the occupancy rate of the call decoding degree resource exceeds the overload threshold, The occupancy rate is compared with the overload threshold of the database 200 to perform an overload control operation according to the corresponding overload grade and display the result to the operator through the BSM (S8-3).

On the other hand, if the trigger target in the 8-1 step (S8-1) is the ATM OAM cell utilization rate of the link between the systems, the overload control processor 300 if the ATM OAM cell utilization rate of the link between each system exceeds the overload threshold Comparing the ATM OAM cell utilization rate of each inter-system link with the overload threshold of the database 200 performs the overload control operation according to the corresponding overload class and displays the result to the operator through the BSM (S8-4). ).

As described above, according to the overload control apparatus and method in a mobile communication base station / control station system according to the present invention, the base station and the base station and the base station and the base station and the base station By adding the ATM OAM cell of the control station as an overload target, there is an excellent effect of stably operating an unstable call system due to the link overload between the base station, the control station, and the switching station.

Claims (9)

An overload threshold input unit for outputting after receiving a changed overload threshold from an operator terminal; A database for storing the threshold of the overload for each grade when the changed overload threshold is input through the overload threshold input unit; After overhauling the system utilization between the self and the call processing subblocks, the occupancy rate of the call decoding resources, and the ATM OAM cell utilization of the link between the systems, the overload class is calculated based on the overload threshold stored in the database. An overload control processor that selects and performs a corresponding overload control operation and simultaneously displays the result to the operator through the BSM; And And a control system driver for starting the overload control processor and initializing a threshold of the overload of the database. A first step in which the control system driver starts the overload control processor and simultaneously initializes the overload threshold of the database; A second step of determining whether an overload threshold input unit receives a changed overload threshold from an operator terminal; If the changed overload threshold is not inputted from the operator terminal in the second step, the process proceeds to the second step, and if the changed overload threshold is input from the operator terminal, the overload threshold input unit updates and applies the overload threshold of the database. Three steps; A fourth step of the overload control processor checking its system utilization rate, occupancy rate of call decoding resource, and ATM OAM cell utilization rate of the link between each system; A fifth step of determining, by the overload control processor, whether an operator has selected an overload-inducing object dynamic selection method; When the operator selects a method for dynamically selecting an overload-inducing target in the fifth step, the overload control processor overloads the system usage rate, the occupancy rate of the call decoding resource, and the ATM OAM cell utilization rate of the link between the systems in the database. A sixth step of calculating an overload target and an overload rating in comparison with the threshold; And And a seventh step in which the overload control processor performs an overload control operation according to the overload class and displays the result to the operator through the BSM. The method of claim 2, When the operator selects the overload triggering object priority selection method in the fifth step, the overload control processor compares the overload triggering object having a high priority with the overload threshold in the database and performs an overload control operation according to the corresponding overload class. And an eighth step of displaying to the operator through the operator terminal at the same time. The method of claim 2, The third step may include a step 3-1 in which the overload threshold input unit receives a changed overload threshold from an operator; And In the mobile communication base station / control station system characterized in that the overload threshold input unit receives a changed overload threshold from the operator and updates the changed overload threshold in the database and at the same time apply to the database in real time. Overload control method. The method of claim 2, The sixth step may include: a sixth step in which the overload control processor compares an overload threshold of its system usage rate with a system usage rate stored in a database; A step 6-2 in which the overload control processor compares its system usage rate and derives a corresponding overload rating; Step 6-3, wherein the overload control processor compares the occupancy rate of the call decoding resource with the overload threshold of the occupancy stored in the database; Step 6-4, in which the overload control processor compares the occupancy rate of the call decoding resource and derives the corresponding overload class; Step 6-5, wherein the overload control processor compares an ATM OAM cell utilization rate of each system link with an overload threshold of occupancy stored in a database; Step 6-6, wherein the overload control processor compares ATM OAM cell utilization rates of links between systems and derives an overload class corresponding thereto; Step 6-7, wherein the overload control processor compares the overload class of the overload control processor, the overload class of the call decoding resource, and the overload class for the ATM OAM cell utilization rate of the links between the systems; And The overload control method of the mobile communication base station / control station system, characterized in that the overload control processor comprises a sixth to eighth step of calculating the target having a high overload rating. The method of claim 2, The seventh step may include determining whether the grade calculated by the overload control processor is a normal grade; A step 7-2 in which the overload control processor displays the operator in blue without controlling the system call in step 7-1 if the overload level is normal; A 7-3 step in which the overload control processor controls the originating or incoming call and displays it in green at the same time as the overload control processor in the step 7-1; A step 7-4 in which the overload control processor controls the originating and incoming calls and displays them in yellow at the same time if the overload control processor is a major class in step 7-1; And In step 7-1, when the overload control processor determines that the overload class is a crystal class, the mobile communication base station comprises controlling the outgoing, incoming, and hand-off call and displaying it to the operator in red. Overload control method in control / control station system. The method of claim 3, wherein In the eighth step, the overload control processor determines whether the overload causing target among the system utilization rate, the occupancy rate of the call decoding resource, and the ATM OAM cell utilization rate of the link between the systems is an eighth step. ; And If the trigger target is the system utilization rate in step 8-1, if the system utilization rate exceeds the overload threshold, the overload control processor compares the system utilization rate with the overload threshold value of the database according to the corresponding overload level. An overload control method in a mobile communication base station / control station system, comprising performing an overload control operation and simultaneously displaying the result to an operator through a BSM. The method of claim 7, wherein If the trigger target is the occupancy rate of the call decoding resource in step 8-1, if the occupancy rate of the call decoding resource is greater than the overload threshold, the overload control processor compares the occupancy rate of the call decoding resource with the overload threshold of the database. And a step 8-3 of performing an overload control operation according to the corresponding overload level and displaying the result to the operator through the BSM. . The method of claim 7, wherein If the trigger target in step 8-1 is the ATM OAM cell utilization rate of each inter-system link, the overload control processor determines the ATM OAM cell utilization rate of each inter-link link if the ATM OAM cell utilization rate of each inter-system link exceeds the overload threshold. And performing an overload control operation according to the overload class corresponding to the overload threshold value of the database, and displaying the result to the operator through the BSM. Overload control method in control / control station system.