JP2004208178A - Load controlling method and load controller - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a load controlling method and a load controller which prevent a system from failing resulting from an overload in a base station device, etc., and can continue stable processing. <P>SOLUTION: A load required for a plurality of pieces of processing is stored in a load storing part 101 for each processing, and a processing regulation threshold is stored in a processing regulation threshold storing part 107 in advance. Also, the present load is stored in a present load storing part 108. The processing type of requested processing is determined by a processing type determining part 102, a load required for the processing is read from the load storing part 101 for each processing, and the load is added to update the present load. Next, an overload state determining part 105 determines whether the value of a predictive present load caused by the updated present load exceeds the processing regulation threshold. A processing part 104 performs the requested processing when the predictive present load is smaller than the processing regulation threshold and not to be an overload on the basis of the determination. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an apparatus for controlling system optimization by predicting a future load, and in particular, a load control method in a base station apparatus of a mobile communication system having a load monitoring and load control function, or an exchange or a network. And a load control device.
[0002]
[Prior art]
In a base station device of a mobile communication system, an exchange, a network, and the like, call control and the like are performed as communication control, and monitoring and control of a load are performed by a control unit.
[0003]
As a method of avoiding a congestion state when performing call control according to the related art, a method such as a call distribution method described in Japanese Patent Application Laid-Open No. 2000-197994 (Patent Document 1) has been adopted. In this method, the load of the processor is measured periodically, such as by measuring the load in a fixed time, and if the processing load exceeds a preset processing control threshold, the processing is not accepted.
[0004]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 2000-197994
[Problems to be solved by the invention]
In the conventional congestion state avoidance method described above, the load state is periodically monitored, and it is determined whether or not to regulate based on the result. Therefore, the regulation process is delayed and the response is delayed. There was a problem.
[0006]
The present invention has been made in view of such a point, and an object of the present invention is to prevent a system from going down due to overload in a base station device of a mobile communication system and to continue stable processing. It is an object of the present invention to provide a load control method and a load control device that can perform the control.
[0007]
[Means for Solving the Problems]
The load control method of the present invention is a load control method by a processor that determines whether or not a requested process can be executed according to a current load, and stores in advance loads required for a plurality of processes and a process regulation threshold. Setting, reading a load required for the requested processing, adding the read load to a current load to calculate a predicted current load, and calculating the predicted current load from the processing regulation threshold. Executing the requested processing when the value is smaller than the threshold value.
[0008]
According to this procedure, it becomes possible to control the base station device and the exchange of the mobile communication system in consideration of the increase (increase value) of the load required for the requested processing. Load is monitored at regular intervals, the result is stored as the current load, and the load that predicts the future load that executed the requested process is compared with the one that determines whether to restrict the process. Control becomes possible.
[0009]
Further, when the predicted current load is larger than a predetermined threshold, the execution of the requested processing is restricted, and the load required for the requested processing is subtracted from the predicted current load to obtain a current load. And storing the information in a load storage unit. According to this procedure, even when the requested processing is regulated (not executed), the current load can be accurately stored.
[0010]
Further, the current load stored in the current load storage unit is updated according to the load measured at a predetermined cycle. This procedure allows a more accurate current load to be stored.
[0011]
Further, the current load stored in the current load storage unit is subtracted and updated by a load corresponding to the process that has completed the process. According to this procedure, the current load according to the end of the processing can be stored.
[0012]
The method further includes a step of setting a load required for the plurality of processes and the process regulation threshold via a network. According to this procedure, setting from a remote place remote from the device is possible.
[0013]
Further, the load required for the plurality of processes is updated as needed by arbitrarily measuring a load accompanying execution of each process. According to this procedure, the load associated with the execution of each process is measured by an automatic load measuring unit or the like and is updated as needed, thereby enabling accurate load setting.
[0014]
Further, when the predicted current load is larger than a predetermined threshold value, the method further includes a step of, when regulating the execution of the requested process, distributing the execution of the requested process to another processor. . This procedure allows for a reasonable distribution of processing.
[0015]
A load control device according to the present invention is a load control device including a processor that determines whether a requested process can be performed according to a current load, and includes a current load storage unit that stores a current load, A load storage unit for each process that stores a load required for each process, a process regulation threshold storage unit that stores a process regulation threshold in advance, and a value of a predicted current load obtained by adding the load required for the process to a current load An overload state determination unit that determines whether or not the processing restriction threshold is exceeded, and a processing unit that executes the requested processing when the overload is not over based on the determination of the overload state determination unit. It is characterized by having.
[0016]
With this configuration, it is possible to realize a load control device that can perform control in consideration of an increase (increase value) of a load required for a requested process in a base station device or an exchange of a mobile communication system.
[0017]
Further, the present invention is characterized in that the load stored in the current load storage unit is updated according to a load measured at a predetermined cycle. With this configuration, a load control device capable of storing a more accurate load can be realized.
[0018]
Further, when the predicted current load is larger than a predetermined threshold, a multiprocessor configuration including a plurality of processors that distributes the execution of the requested processing to another processor when regulating the execution of the requested processing. It is characterized by being. With this configuration, it is possible to realize a load control device capable of rational distribution of processing among a plurality of processors.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram illustrating a configuration example of a base station device that implements a load control method and a load control device according to an embodiment of the present invention. This base station apparatus has a configuration of a control block of a base station apparatus of a mobile communication system having a load monitoring and a load control function, and has means for controlling processing regulation by predicting a future load for each processing. . In addition, the present invention can be similarly applied not only to the base station device but also to a control device in an exchange, a network, or the like.
[0020]
1, base station apparatus 100 includes a load storage unit 101 for each processing, a processing type determination unit 102, a reception unit 103, a processing unit 104, an overload state determination unit 105, a regulation state storage unit 106 , A processing regulation threshold storage unit 107, a current load storage unit 108, a current load / monitoring result load comparison unit 109, a load monitoring unit 110, and a timer 111. The processing type determination unit 102, processing unit 104, overload state determination unit 105, current load and monitoring result load comparison unit 109, and load monitoring unit 110 are realized by executing a predetermined processing program in a processor provided in the apparatus. Is done.
[0021]
The load storage unit 101 for each process stores, for each process, a load increase value expected when each process is executed in connection with monitoring of the load and control of the load in the base station device 100. The process type determining unit 102 determines the process type received by the receiving unit 103, reads out a corresponding value from the load storage unit 101 for each process, and stores the read value in the current load storage unit 108. Add or update to the current load.
[0022]
The receiving unit 103 receives the generated processing, and transmits information on the processing to the processing type determination unit 102. The processing unit 104 executes the processing received by the receiving unit 103. The overload state determination unit 105 compares the threshold value stored in the processing restriction threshold storage unit 107 with the current load stored in the current load storage unit 108, and compares the comparison result with the restriction state storage unit 106 to determine the restriction state. save.
[0023]
The restriction state storage unit 106 stores the determination result of the overload state determination unit 105. The processing regulation threshold storage unit 107 stores a predetermined processing regulation threshold, and this processing regulation threshold is used for overload determination. The current load storage unit 108 stores a current load.
[0024]
The current load and the monitoring result The load comparison unit 109 compares the load value measured by the load monitoring unit 110 at regular intervals with the current load value stored in the current load storage unit 108, and performs load monitoring. If the value obtained by the unit 110 is larger, the load value is stored in the current load storage unit 108. The load monitoring unit 110 measures the load at regular intervals. The timer 111 supplies time to each unit.
[0025]
Next, a detailed operation of the present embodiment will be described with reference to FIGS.
First, the operation at the start of the process will be described. FIG. 2 is a flowchart showing a procedure at the start of the process.
[0026]
At the start of the process, as shown in FIG. 2, it is determined whether or not the process is overloaded. If the process is overloaded, the process is regulated. If the process is not overloaded, the process is executed. Hereinafter, the details will be described according to the processing procedure shown in the flowchart of FIG.
[0027]
First, the overload state determination unit 105 determines whether or not the current load is larger than a predetermined restriction threshold stored in the processing restriction threshold storage unit 107 (step S1). If the determination in step S1 is YES (overload), the process is regulated (step S8) and the process ends.
[0028]
On the other hand, if the determination in step S1 is NO (no overload), the processing type determination unit 102 determines the processing type of the processing received by the receiving unit 103 (step S2). Then, the load corresponding to the processing type obtained in step S2 is read from the load storage unit 101 for each processing (step S3). Subsequently, the current load is updated by addition based on the load read in step S3 (step S4). The current load in this case is a current load (predicted current load) that is predicted to be generated when the received new process is executed.
[0029]
Thereafter, the overload state determination unit 105 determines whether or not the current load obtained in the update processing in step S4 is larger than a predetermined restriction threshold stored in the processing restriction threshold storage unit 107. (Step S5). If the determination in step S5 is NO (not overload), the process is executed (step S9).
[0030]
On the other hand, if the determination in step S5 is YES (overload), a process restriction state is set (step S6). Next, the load read in step S3 is subtracted from the current load obtained in the update processing in step S4 to update the current load (step S7). Then, the processing is regulated (step S8).
[0031]
Next, the operation at the end of the process will be described. FIG. 3 is a flowchart showing the procedure at the end of the process. FIG. 3 shows a procedure after the processing by the processing execution (step S9) in FIG. 2 is completed, and the details will be described below according to the processing procedure shown in the flowchart of FIG.
[0032]
When the arbitrary process is completed, the process type of the completed process is determined by the process type determination unit 102 (step S11). Next, a load corresponding to the completed process obtained in step S11 is read from the load storage unit 101 for each process (step S12). Then, the current load is updated by subtracting the load obtained in step S12 from the current load (step S13).
[0033]
Thereafter, the overload state determination unit 105 determines whether or not the current load obtained in the update processing in step S13 is larger than a predetermined restriction threshold stored in the processing restriction threshold storage unit 107. (Step S14). If the determination in step S14 is NO (not an overload), the process restriction state is released (step S16). If the processing restriction state has not been set before this processing, the state is maintained.
[0034]
On the other hand, if the determination in step S14 is YES (overload), a process restriction state is set (step S15). If the processing restriction state is set before this processing, the state is maintained.
[0035]
Next, a process of monitoring the current load will be described. FIG. 4 is a flowchart showing the procedure of the current load monitoring process.
[0036]
In the current load monitoring process, as shown in FIG. 4, the load is monitored by the load monitoring unit 110 at regular intervals, and the monitoring result is compared with the current load and updated. Hereinafter, the details will be described according to the processing procedure shown in the flowchart of FIG.
[0037]
First, the load monitoring unit 110 periodically monitors the load (step S21). Hereinafter, this result is referred to as a monitoring result. Then, it is determined whether or not the monitoring result obtained in step S21 is larger than the current load stored in the current load storage unit 108 (step S22). If the determination in step S22 is YES (the monitoring result is larger), the current value stored in the load storage unit is updated based on the monitoring result (step S23).
[0038]
Then, after the update processing in step S23, and when the determination in step S22 is NO (the monitoring result is smaller), the current load is determined by the predetermined regulation threshold stored in the processing regulation threshold storage unit 107. The determination as to whether or not the value is larger is performed by the overload state determination unit 105 (step S24).
[0039]
If the determination in step S24 is NO (not an overload), the process restriction state is released (step S26). If the processing restriction state has not been set before this processing, the state is maintained. On the other hand, if the determination in step S24 is YES (overload), the process restriction state is set (step S25). If the processing restriction state is set before this processing, the state is maintained.
[0040]
Here, an operation procedure when the overload state determination unit 105 and the processing unit 104 have an automatic load measurement function will be described. FIG. 5 is a flowchart showing the operation procedure of the automatic load measurement function unit. In this case, after the start of the load measurement, the execution of the process, and the end of the load measurement, the measurement result is registered in the load storage unit 101 for each process as a predicted load increase rate of the measured process. Hereinafter, the details will be described according to the processing procedure shown in the flowchart of FIG.
[0041]
First, load measurement is started for each process (step S31). Then, the processing is executed (step S32), and thereafter, the measurement of the load for each processing is terminated (step S33). Then, the measurement result is registered as a predicted load (increase value) of the measured process in the load storage unit 101 for each process (step S34). As a result, the load is automatically measured and stored as a predicted load increase rate, which can be used for subsequent load control.
[0042]
Note that the setting of the load required for a plurality of processes in the present embodiment can be performed from a location remote from the base station via a network.
[0043]
Further, in the description related to FIG. 1, the configuration is described as the configuration of the base station including the processor configuring one processing block, but the configuration is not limited thereto. When regulating the execution of the requested process as a system including a plurality of processors, the execution of the requested process may be distributed to another processor to execute a reasonable distribution of the process. It is possible.
[0044]
According to the processing procedure and configuration of the present embodiment as described above, the load of each processing is predicted in the base station device, the switch, the network control device, and the like of the mobile communication system, and the processing is controlled before becoming congested. Therefore, the system can be prevented from going down due to overload, and stable processing can be continued. As a result, a system with excellent stability can be realized.
[0045]
【The invention's effect】
As described above, according to the present invention, in a base station apparatus of a mobile communication system, a load control method and a load control method capable of preventing a system from being down due to overload and continuing stable processing Equipment can be provided.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration example of a base station apparatus for realizing a load control method and a load control apparatus according to an embodiment of the present invention; FIG. 2 is a flowchart showing a procedure at the start of processing; FIG. FIG. 4 is a flowchart showing a procedure of a current load monitoring process. FIG. 5 is a flowchart showing an operation procedure of an automatic load measuring function unit.
Reference Signs List 100 Base station apparatus 101 Load storage unit for each processing 102 Processing type determination unit 103 Receiving unit 104 Processing unit 105 Overload state determination unit 106 Regulation state storage unit 107 Processing restriction threshold storage unit 108 Current load storage unit 109 Current load And monitoring result load comparing unit 110 load monitoring unit 111 timer

Claims (10)

A load control method by a processor that determines whether the requested processing can be performed according to a current load,
Storing in advance loads required for a plurality of processes and process regulation thresholds;
Reading the load required for the requested processing;
Calculating the predicted current load by adding the read load to the current load;
Performing the requested processing when the predicted current load is smaller than the processing regulation threshold;
A load control method comprising: If the predicted current load is larger than a predetermined threshold, the execution of the requested process is restricted, and the load required for the requested process is subtracted from the predicted current load to obtain the current load as the current load. 2. The load control method according to claim 1, further comprising a step of storing the load in a storage unit. The load control method according to claim 2, wherein the current load stored in the current load storage unit is updated according to the load measured at a predetermined cycle. 4. The load control method according to claim 3, wherein the current load stored in the current load storage unit is subtracted and updated by a load corresponding to the process that has completed the process. 5. The load control method according to claim 1, further comprising: setting a load required for the plurality of processes and the process regulation threshold via a network. The load control method according to any one of claims 1 to 5, wherein the load required for the plurality of processes is arbitrarily updated by measuring a load associated with execution of each process. If the predicted current load is greater than a predetermined threshold, the method further comprises the step of, when regulating the execution of the requested processing, distributing the execution of the requested processing to another processor. 6. The load control method according to any one of 2 to 5. A load control device based on a processor that determines whether the requested processing can be performed according to a current load,
A current load storage unit for storing a current load;
A load storage unit for each process that stores a load required for the process for each process,
A processing regulation threshold storage unit that stores a processing regulation threshold in advance,
An overload state determination unit that determines whether the value of the predicted current load obtained by adding the load required for the processing to the current load exceeds the processing regulation threshold,
Based on the determination of the overload state determination unit, a processing unit that executes the requested process when not overload,
A load control device comprising: The load control device according to claim 8, wherein the load stored in the current load storage unit is updated according to a load measured at a predetermined cycle. When the predicted current load is larger than a predetermined threshold, when the execution of the requested processing is regulated, a multiprocessor configuration including a plurality of processors that distributes the execution of the requested processing to another processor. The load control device according to claim 8 or 9, wherein

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