KR100730810B1 - Method for controlling traffic in mobile communication network - Google Patents

Abstract

A traffic control method in a mobile communication network is provided to minimize service delay by omitting a fault management. An automatic call control mode of a mobile communication network is carried out(S200). It is decided whether link Erlang of the network exceeds preset link Erlang in the automatic call control mode(S202,S204). If so, a call of a preset ratio is abandoned from overall calls of the network(S208). After preset time elapses, it is decided whether call processing is normally conducted(S210). If so, the calls are abandoned in a ratio of being reduced by 1% from the preset ratio(S212,S214). If the current link Erlang does not exceed the preset link Erlang, an abandoning ratio is continuously reduced on a 1% basis.

Description

Traffic control method in mobile network {METHOD FOR CONTROLLING TRAFFIC IN MOBILE COMMUNICATION NETWORK}

1 is a schematic block diagram of a mobile communication network for performing a traffic control method according to the present invention;

2 and 3 are flowcharts of a traffic control process in a mobile communication network according to a preferred embodiment of the present invention.

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

100: MS (Mobile Station)

200: mobile communication network

202/1 to 202 / n, 204/1 to 204 / n: BTS (Base station transceiver system)

206/1 to 206 / n: BSC (Base Station Controller)

208, 210: MSC / VLR (Mobile Switching Center / Visitor Locator Resister)

212: HLR

214: SCP

The present invention relates to a traffic control technology in a mobile communication network, and more particularly, to a traffic control method in a mobile communication network suitable for minimizing the damage caused by call congestion in a specific time period in an advanced mobile communication network such as an intelligent network (IN). will be.

In general, with the development of the telecommunications industry, the penetration rate of mobile communication terminals has rapidly increased and the proportion of mobile communication terminal users has been increasing, and mobile communication terminals have become one of the necessities of modern man.

Accordingly, most people have mobile communication terminals such as PCS, cellular phones, and PDAs. These mobile communication terminals are used as various communication means as well as information transmission means with specific counterparts.

On the other hand, SS7 (Signaling System 7) is a form of intelligent network protocol designed to provide a specific service in the voice network in the 80's, a protocol for integrated management of call information and data communication access information of voice communication. Its primary function is to provide transactional capabilities to perform fast call setup and remote database reference operations. It also features out-of-band signaling (OOB) to support call setup, billing, and call routing. It performs a function of bridging between the packet data communication network (PDSN) and the PSTN by performing an information exchange function.

SS7 manages meta information of both voice communication and data communication, whereas No.7 protocol used in general intelligent network manages meta information of voice communication call. It is possible to develop various intelligent network systems based on the integrated environment of communication. In particular, SS7 is very important in applications such as call routing, area code portability, prepaid and postpaid calling cards, and IP phones.

Currently, the signaling method of voice communication network is integrated with SS7 and is adopted as essential interworking signaling method for VoIP, UMS, and intelligent network. SS7 features high-speed packet switching, out-of-band signal processing using SSP (Service Switching Point), STP (Signal Transfer Point), and SCP (Service Control Point).

However, in the intelligent network to which the SS7 protocol is applied, there may be a case where the bursting of the frequent traffic in a certain time zone, for example, New Year's Eve, an event date (Valentine's Day, Christmas Eve, etc.), is not able to process the call normally in the intelligent network.

In such a heavy call, the operator manually executes a command to call a certain percentage of the entire call, for example, [set-ss7-ctrl70] to discard about 30% of the total call.

This manual command environment is not only cumbersome for the operator to continuously monitor the system, but also results in a large number of failure handling procedures, since the call is discarded in the event of a system crash due to congestion. There is a problem that excessive service delay time occurs.

For example, due to SCP-No.7 tcap process hang-up due to the shortage of SCP No.7 processing capacity, non-processing failure recovery, process due to lack of internal memory of the No.7 SS7 stack Operator actions such as restarting can occur, which can be very inconvenient for the service user, as these processes result in a failure to perform normal call processing for as little as 30 minutes or as long as 2 hours.

The present invention is to overcome the inconvenience and the limitations of the prior art described above, by automatically discarding a certain percentage of the total calls handled by the SCP in accordance with the set criteria to exclude the service recovery process due to the failure inherently The purpose of the present invention is to provide a traffic control method in a mobile communication network.

According to a preferred embodiment of the present invention for achieving the above object, a method of performing a call control mode in a mobile communication network, performing a call automatic control mode of the mobile communication network, an event in which the current date is set under the call automatic control mode Determining whether the link lang of the mobile communication network has exceeded a preset link align; performing normal call processing if a current date is a set event date and does not exceed the preset value; If exceeded, discarding the call of the preset ratio in all the calls of the mobile communication network, determining whether call processing is normally performed after the preset time has elapsed, and after the preset time has elapsed. If processing is successful, the call will be discarded at a rate reduced by 1% from the preset rate. And performing normal call processing if the current link lang does not exceed the preset link lang, and if the call processing is not normally performed after the preset time elapses or if the current link lang has exceeded the preset link lang. Provided is a traffic control method in a mobile communication network comprising the step of discarding a call at a rate increased by 1% from the preset rate.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

1 is a block diagram of a mobile communication network for implementing a traffic control method according to the present invention. The mobile station (MS) 100, the mobile communication network 200, and a base station transceiver system (hereinafter referred to as BTS) Abbreviated) (202/1 to 202 / n, 204/1 to 204 / n), base station controller (hereinafter abbreviated as BSC) 206/1 to 206 / n, mobile switching center (Mobile Switching Center (abbreviated as MSC) / Visitor Location Register (hereinafter abbreviated as VLR) (208, 210), Home Location Resister (abbreviated as HLR) (212), system controller ( System Control Point (hereinafter abbreviated as SCP) (214).

The MS 100 refers to a mobile client such as (or possessed) a mobile communication terminal, for example, a cellular phone, a PCS phone, a DMB phone, and the like. The BTSs 202/1 to 202 / n, 204/1, 204 / n) and provide wireless communication service to subscribers by interfacing with wireless connection according to IS-2000 standard. At this time, only one MS 100 is shown in the drawing, but this is only for convenience of description, and those skilled in the art will readily appreciate that a plurality of MSs connected to the mobile communication network 200 may be configured.

The BTSs 202/1 to 202 / n, 204/1, and 204 / n represent base stations, which respectively manage communication areas allocated in units of centers, and enter the MS 100 and the IS- which enter the communication area of their own. It provides wireless communication service such as call processing, handoff and location registration to subscribers by interfacing with wireless connection according to 2000 standard.

The BSCs 206/1 to 206 / n are located between the MSC / VLR 208 and the BTSs 202/1 to 202 / n, 204/1 and 204 / n, respectively, to connect to the Internet via a PSTN (not shown). It performs matching function and performs vocoding function for voice. The BSCs 206/1 to 206 / n control the plurality of BTSs 202/1 to 202 / n, 204/1, and 204 / n, and call processing and hands for communication with the MSC / VLR 208. It performs the off, and delivers the location registration information from each base station to the MSC / VLR (208).

The MSC / VLR 208 performs an exchange function in, for example, a CDMA 2000 network, and connects a subscriber to various additional equipment in the mobile communication network, such as an LBS server and an additional service server, to provide additional services, or another network, for example. For example, it connects with PSTN and provides service. In addition, the MSC / VLR 208 is connected to a plurality of BSCs 206/1 to 206 / n to perform the requested call signal processing in exchange with another MSC / VLR 210.

The HLR 212 is a database that stores mobile subscriber information. The HLR 212 manages mobility information of the subscriber and various additional service information in order to manage the mobility of the subscriber.

SCP 214 performs system control function for intelligent network, and is a system of No.7 signal network that is in charge of service control. Service control such as qualified inspection of information received from performance switch (SSP), translation of routing information, etc. Perform For example, SCP 214 utilizes a subscriber DB to support prepaid mobile phone services, capping services, regional discounts and number conversion services.

In the present embodiment, the SCP 214 is processed in order to minimize the failure caused by the lack of processing capacity of No.7, for example, restart of the process due to lack of internal memory of the No.7 SS7 stack and runaway call. It is characterized in that a certain percentage of all calls are automatically discarded. As described later, the criteria for automatic discard processing exceed the automatic control criteria Link Erlang specified in the "Config" file, and a detailed flow control process will be referred to the following flowchart.

Hereinafter, with reference to the above-described configuration, with reference to the flowchart of Figures 2 and 3 attached to the traffic control process in the mobile communication network according to a preferred embodiment of the present invention will be described in detail.

First, as shown in FIG. 2, in step S200, the SCP 214 performs a traffic control mode, that is, a call automatic control mode according to the present embodiment, in which the SCP 214 performs a step As in S202, it is determined whether the current date is a set event date, for example, December 24th. That is, in the present embodiment, a date in which a traffic congestion is expected in the mobile communication network is set in advance and is databased.

As a result of the determination in step S202, if the current date is the set event date, SCP 214 determines whether the link Erlang (link usage) in the current mobile communication network exceeds a preset value, for example, "0.9 link Erlang". To judge. In this case, the link Erlang may be applied to, for example, a message buffer size.

As a result of the determination in step S204, if the current link erroneous preset value is exceeded, SCP 214 proceeds to step S208 to discard a certain percentage, for example, 50% of the calls. At this time, the automatic call discard process is possible by setting an arbitrary call discard processing command in the SCP 214, which will be easily understood by those skilled in the art.

Meanwhile, in step S210, the SCP 214 determines whether the preset time has elapsed, and determines whether call processing is normally performed after the preset time has elapsed (S212).

As a result of the determination in step S212, if the call processing is not normally performed even after the preset time elapses, SCP 214 proceeds to the process of FIG. 3, but if the call processing is normally performed after the preset time elapses, SCP 214 is performed. Proceeds to step S214.

In step S214, SCP 214 discards the call at a rate of 1% reduction, i.e. 49%, from the discard rate. That is, in the present embodiment, after applying the discard rate set for the first time, it is determined whether the call is processed again after a predetermined time, and when the normal call is processed, the discard rate is reduced, thereby preventing the discard rate from being excessively set.

Subsequently, in step S216, SCP 214 determines whether the current link Erlang exceeds the preset link Erlang, and if so, proceeds to the process of FIG. 3, but otherwise returns to step S214 to provide the feedback. Decrease the waste rate continuously in 1% increments.

Next, referring to FIG. 3, in step S220, SCP 214 discards the call at a rate of 1% increase, i.e., 51%. This step (S220) proceeds when it is determined that the normal call processing in step S212 is not normal, or it is determined in step S216 that the link erronee has exceeded the preset link erlang, the initial set discard rate. It also takes into account the case that the normal call can not be processed.

After the progress of the step S220, in step S222, SCP 214 once again determines whether the link Erlang of the current mobile communication network exceeds the preset link Erlang.

As a result of the determination in step S222, if the current link align exceeds the preset link align, the feedback is fed back to the step S220 to increase the discard rate by 1% (for example, a ratio of 52%), but preset the current link lang. If the link Erlang is not exceeded, the process proceeds to step S224 to process the normal call and ends the process.

As described above, the present invention is implemented to monitor the link Erlang at the set event date and automatically discard a certain ratio in the entire call when a certain link Erlang is detected, thereby preventing a system failure due to the rush.

As described above, the embodiments of the present invention have been described in detail, but the present invention is not limited to these embodiments, and various modifications may be made by those skilled in the art within the spirit and scope of the present invention described in the claims below.

According to the present invention, since the predetermined part of the call is discarded before the call is congested, the fault handling process can be omitted, thereby minimizing service delay. As a result, more accurate and stable system operation is possible and further, the service usage satisfaction is increased.

Claims (9)

delete delete delete delete delete Method of performing call control mode in a mobile communication network, Performing a call automatic control mode of the mobile communication network; Determining whether a link Erlang of the mobile communication network exceeds a preset link Erlang under the call automatic control mode; If the preset value is exceeded, discarding the call of the preset rate in all the calls of the mobile communication network; Determining whether call processing is normally performed after a preset time elapses; Discarding the call at a rate reduced by 1% from the preset rate if the call processing is normally performed after the preset time elapses; Continuously reducing the discard rate in units of 1% if a current link errone does not exceed the preset link erlang. Traffic control method in a mobile communication network comprising a. The method of claim 6, The method, And if the call processing is not normally performed after the preset time has elapsed, discarding the call at a rate increased by 1% from the preset rate. The method of claim 6, The method, And discarding the call at a rate increased by 1% from the preset rate if the current link Erlen has exceeded the preset link Erlang. delete

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