KR19980021537A - Control Method of Mobile Call Overload in Personal Communication Switch - Google Patents

Abstract

The present invention provides a method for overload control of a mobile handset switch in a personal handheld communication switch suitable for maintaining a certain level of call service when the access switching processor (ASP) -W or a base station controller is overloaded. In the case of overloading the ASP-W or the base station controller during the mobile call processing in the personal mobile communication switch according to the related art, the switching function of the switching system may be interrupted, thereby preventing the normal mobile call processing. In the present invention, when the ASP-W (18, 20) is overloaded, the base station controller controls the mobile call to the ASP-W (18, 20) according to the load state of the ASP-W (18, 20) Even if 14 is overloaded, a certain level is controlled by controlling a mobile call that is received by the base station controller 14 according to the load state of the base station controller 14. It is to improve the above-mentioned drawbacks by making it possible to continue to service incoming calls on reliably.

Description

Control Method of Mobile Call Overload in Personal Communication Switch

The present invention relates to a mobile call overload control method of a personal communication service (PCS) switch, and in particular, maintains a certain level of call service amount when an access switching processor (ASP) -W or a base station controller is overloaded. A mobile call overload control method of a personal mobile communication switch suitable for maintaining the service of the personal mobile communication switch properly.

In this regard, in case of overloading the ASP-W or the base station controller during the mobile call processing in the personal mobile communication switch according to the prior art, the switching function of the switching system may be interrupted, thereby preventing the normal mobile call processing. There is a flaw.

The present invention has been made to solve the above-described drawbacks, and when the ASP-W is overloaded, the mobile call is controlled according to the load state of the ASP-W, and the mobile call is made according to the load state of the base station controller even when the base station controller is overloaded. An object of the present invention is to provide a method for overload control of a mobile call of a personal mobile communication switch that can control a service of a certain level of calls.

1 is a block diagram showing an embodiment of hardware to which the mobile call overload control method of a personal mobile communication switch according to the present invention can be applied.

Figure 2 is a flow chart showing step by step an embodiment of an overload control algorithm of a mobile call according to the mobile call overload control method of the present invention.

3 is a flowchart illustrating another embodiment of an overload control algorithm for mobile call according to the mobile call overload control method of the present invention.

Explanation of symbols for main parts of the drawings

10: mobile terminal 12: base station

14 base station controller 16 personal mobile communication exchange

18,20: 1st, 2nd ASP-W22: NTP

24: INP26,28: 1st, 10th LRP

30: first ASP

The above and other objects and various advantages of the present invention will become more apparent from the preferred embodiments of the invention described below with reference to the accompanying drawings by those skilled in the art.

Hereinafter, an embodiment of the present invention for achieving the above object in detail.

Referring to FIG. 1, FIG. 1 is a block diagram showing an embodiment of hardware to which the mobile call overload control method of a personal mobile communication switch according to the present invention is applicable. A plurality of base stations 12 each wirelessly communicating with the mobile terminal 10, a base station controller 14 each having a wired communication with the plurality of base stations 12, and a base station controller 14 communicating with the base station controller 14 to exchange according to a corresponding telephone number. A personal mobile communication exchange (16) to perform a function, the personal mobile communication exchange (16) having a first access switching processor (ASP) -W (18) in communication with the base station controller (14), and another base station controller; The second ASP-W 20 which communicates, the first ASP 30 that performs the matching function between the subscriber and the relay line, the first ASP 30 and the first and second ASP-Ws 18 and 20; Communicate with each other by the required number translation from the first ASP 30 and the first and second ASP-Ws 18 and 20, respectively. NTP (number translation processor) 22 and the access switching system (ASS) of the first and second ASP-W (18,20), the central control subsystem (CCS) and ASS () mutually Inter-networking processor (INP) 24 which provides an interworking function between the first and second ASP-Ws 18 and 20, respectively, and registers the location of the mobile terminal. The first to tenth LRP (local register processor) (26, 28) to control is made.

The present invention thus made will be described in detail with reference to FIGS. 2 and 3 as follows.

First, a plurality of base stations 12 are formed so that each base station 12 wirelessly communicates with a plurality of mobile terminals 10 in a corresponding area, and the base station controller 14 is wired with a plurality of base stations 12 respectively. Communicate

That is, one cell managed by one base station 12 may include a plurality of mobile terminals 10, and one base station controller 14 communicates with a plurality of base stations 12 by wire.

Next, the personal mobile communication exchanger 16 communicates with the base station controller 14 to perform an exchange function according to the corresponding telephone number dialed by the subscriber, thereby opening the call path between the subscribers.

Here, the first ASP-W 18 of the personal mobile communication exchange 16 communicates with the base station controller 14, and the second ASP-W 20 communicates with another preset base station controller.

That is, a plurality of ASP-Ws 18 and 20 are formed in the personal mobile communication exchange 16, and each ASP-W 18 and 20 is connected one to one with one base station controller, respectively.

In addition, a plurality of first ASPs 30 are also formed in the personal mobile communication switch 16, each of which executes a matching function of a subscriber and a relay line according to the corresponding telephone number, and the NTP 22 performs the first ASP 30. FIG. And communicating with the first and second ASP-Ws 18 and 20, respectively, for translating the required number from the first ASP 30 and the first and second ASP-Ws 18 and 20, respectively. The INP 24 controls the interworking functions of the first and second ASP-Ws 18 and 20.

The first to tenth LRPs 26 and 28 are connected to the first ASP 30 and the first and second ASP-Ws 18 and 20, respectively, to control location registration of the mobile terminal 10. Communicate with the VLR to provide subscriber information.

Accordingly, each of the first and second ASP-Ws 18 and 20 sets an allowable number of calls per unit time according to an overload condition in order to control a call that reaches each of the first and second ASP-Ws 18 and 20. Setting and provide information according to the first to tenth LRP (26, 28), the first to tenth LRP (26, 28) is for each ASP including the first ASP (30) in a library called TRCL Save the information.

In addition, when a call is received from the first to the tenth LRP (26, 28) to the first and second ASP-W (18, 20), the library is informed whether or not to perform the call.

The NTP 22 and the first to tenth LRPs 26 and 28 provide their overload information to all the ASPs so that the call enters the NTP 22 or the first to tenth LRPs 26 and 28 from all the ASPs. And all ASPs store call gapping information of NTP 22 and first to tenth LRP 26,28 in a library called TDSL, and call from such a library upon request for number translation and location registration. You will be notified whether or not it is performed.

FIG. 2 is a flowchart illustrating a step-by-step embodiment of an overload control algorithm for mobile call according to the mobile call overload control method of the present invention.

That is, when the first to tenth LRPs 26 and 28 decide to proceed with a call according to the overload state of the corresponding ASP-W, the call proceeds to the corresponding ASP-W and then the corresponding ASP-W. W determines whether the call proceeds according to the overload state of the base station controller and proceeds the call to the base station controller.

3 is a flowchart illustrating another embodiment of an overload control algorithm of a mobile call according to the mobile call overload control method of the present invention.

That is, the first to tenth LRP (26, 28) determines the progress of the call according to the load status of the corresponding ASP-W and the base station controller according to the order of the ASP-W, the base station controller Progress the call in turn.

Referring to the present invention in more detail as follows.

First, the overload control of the base station controller 14 is rated by the overload message sent from the base station controller 14 to the personal mobile communication switch 16, and is allowed when an overload occurs based on the number of calls serviced at the time when the overload occurs. When the number of calls is set and the number is set upward when the number is decreased, the corresponding number is stored in the corresponding library. When the call is set up from the personal mobile communication exchanger 16 to the base station controller 14, it is determined whether or not the call continues.

Next, the overload control of the plurality of first and second ASP-Ws (18, 20) has a central processing unit (CPU) occupancy of the ASP and the number of unprocessed IPCs accumulated in the queue to overload the CROS If it is determined that an overload occurs, the call gapping information to be performed per unit time is transmitted to the first to tenth LRPs 26 and 28 according to the overload class in the TRC block loaded in the corresponding ASP. It is determined by referring to the libraries of the first to tenth LRPs 26 and 28 whether or not the mobile call to the ASP-W is continued.

In other words, when the overload control of the base station controller 14 receives the overload message from the base station controller 14, the load class of the base station controller 14 is determined in the TRC block, and it is determined that the base station controller 14 is overloaded in the TRC block. When the overload occurs, the number of service calls per unit time received by the base station controller 14 at the time of overload is calculated, and the number of calls received by the base station controller 14 is not known to the personal mobile communication exchange 16, so the corresponding ASP-W If the overload occurs or increases by setting the number of calls received in (18), set the number of the service to be serviced per unit time to a value lower than this number and store it in the library.

Next, when the overload is reduced, the reference number of calls is set to a value higher than the number of currently serviced calls, and when a call that is received by the base station controller 14 occurs, the library asks whether the call proceeds.

Accordingly, the library converts the reference number to the interval per call, and if the call progress request is requested, if the interval between the above-mentioned execution call and the call with the progress request request is smaller than the interval per reference call, rejects the progress of the call, and returns to the base station controller 14. Whether to proceed with the incoming call can be made in the corresponding ASP-W and in the LRP, but in the present invention will be controlled by the LRP.

In the overload control of the plurality of first and second ASP-Ws 18 and 20, the overload of the ASP-W is determined by the central processing unit occupancy and the number of unprocessed IPCs, and the central processing unit occupancy is 95% or more. After a certain period of time (8 seconds), the overload is rated by the number of unprocessed IPCs.

At this time, the overload rating is 0 to 10 ratings.

In addition, when an overload occurs or increases, the number of calls to be serviced per unit time is set to a value lower than the number of calls per unit time serviced at that point and stored in the corresponding library, and the call proceeds in the same manner as the base station controller 14 in the library. Determine and control.

At this time, in order to control the incoming call to the corresponding ASP-W, the call control in the LRP.

As described above, the present invention controls a mobile call that reaches the ASP-W (18, 20) according to the load state of the ASP-W (18, 20) when the ASP-W (18, 20) is overloaded, and the base station controller Even when 14 is overloaded, the service of the personal mobile communication switch is controlled by controlling the mobile call that is received by the base station controller 14 in accordance with the load state of the base station controller 14 so that the call can be continuously served at a predetermined level or more. The quality is improved.

Claims (2)

A plurality of base stations 12 each in wireless communication with each of a plurality of mobile terminals 10 in each corresponding area, a base station controller 14 in wired communication with the plurality of base stations 12, and the base station controller 14 A personal mobile communication exchange (16) which communicates with the base station controller (14) to communicate with the base station controller (14). ), A second ASP-W 20 for communicating with another base station controller, a first ASP 30 for performing a matching function of subscribers and extension lines, the first ASP 30 and the first agent; 2 Communicate with each of the ASP-Ws 18 and 20 to translate the required number from the first ASP 30 and the first and second ASP-Ws 18 and 20, respectively, so that the exchange can be performed accordingly. NTP 22, an INP 24 providing an interworking function of the first and second ASP-Ws 18 and 20, the first ASP 30 and the first and second ASP-Ws. (18, In the personal mobile communication system, comprising first to tenth LRPs 26 and 28, respectively connected to 20) and controlling location registration of the mobile terminal: If the first to tenth LRP (26, 28) is to determine whether the call proceeds according to the overload state of the ASP-W to proceed with the call proceeds to the corresponding ASP-W, then the corresponding ASP-W The mobile call overload control method of a personal mobile communication switch characterized in that if the call proceeds to determine the progress of the call according to the overload state of the base station controller to proceed with the call. A plurality of base stations 12 each in wireless communication with each of a plurality of mobile terminals 10 in each corresponding area, a base station controller 14 in wired communication with the plurality of base stations 12, and the base station controller 14 A personal mobile communication exchange (16) which communicates with the base station controller (14) to communicate with the base station controller (14). ), A second ASP-W 20 for communicating with another base station controller, a first ASP 30 for performing a matching function of a subscriber and a relay line, the first ASP 30, and the first and second NTP, which communicates with the ASP-Ws 18 and 20, respectively, and translates the required numbers from the first ASP 30 and the first and second ASP-Ws 18 and 20, respectively, so that the exchange is performed accordingly. (22), an INP 24 providing an interworking function of the first and second ASP-Ws 18, 20, the first ASP 30, and the first and second ASP-Ws ( 18, In the personal mobile communication system, comprising first to tenth LRPs 26 and 28, respectively connected to 20) and controlling location registration of the mobile terminal: The first to tenth LRP (26, 28) is to determine whether the call proceeds according to the load status of the ASP-W and the base station controller according to the corresponding ASP-W, the base station controller in order A mobile call overload control method for a personal mobile communication switch characterized by progressing a call in sequence.