KR102112505B1 - Method for limited call access barring - Google Patents

Abstract

The present invention discloses a method for limiting call connections. That is, when a failure occurs in a specific subscriber management device among a plurality of subscriber management devices, the number of terminals for which the call access limit is restricted is determined by restricting call access to only the terminal in which the subscriber identification information is managed in the specific subscriber management device. Can be minimized.

Description

How to restrict call access {METHOD FOR LIMITED CALL ACCESS BARRING}

The present invention relates to a method for limiting call access to only a terminal in which subscriber identification information is managed in the specific subscriber management device when a failure occurs in a specific subscriber management device among a plurality of subscriber management devices.

In general, a mobile communication system provides a mobile communication service after forming a call by allocating resources, such as allocating a channel for call establishment, when a call connection is attempted from a subscriber.

In this way, when a call connection is attempted from the subscriber station, the base station transmits an associated call processing request to the exchange, so that the corresponding call processing is performed at the exchange that has received it.

However, if a call connection attempt from a plurality of terminals is runaway at a certain point in time, or if an abnormality occurs in a specific core network equipment, normal call processing is impossible and a system failure may occur.

When a failure occurs in the system as described above, it is necessary to stop various services and processes and perform a failure recovery operation. In this process, a call may be restricted to all terminals attempting to connect to the base station. This will result in subscriber dissatisfaction with the mobile communication service.

The present invention was created in view of the above circumstances, and the object to be reached in the present invention is that, in the case of a failure in a specific subscriber management device among a plurality of subscriber management devices, the subscriber identification information is managed in the specific subscriber management device. By limiting the number of terminals to which a call connection is restricted, the number of terminals to which the call connection is restricted is minimized.

The call access limiting method according to the first aspect of the present invention for achieving the above object is managed by the plurality of subscriber management devices when a failure occurs in a specific subscriber management device among a plurality of subscriber management devices that manage subscriber identification information. A determining step of determining subscriber identification information managed by the specific subscriber management device as access restriction identification information among all the subscriber identification information being processed; And providing the determined access restriction identification information to a base station apparatus, so that a call connection restriction is made only to a terminal having the access limitation identification information among all terminals attempting to access the call from the base station apparatus. Is done.

More specifically, each of the plurality of subscriber management devices manages only the subscriber identification information to which the unique identification number of the designated number band is assigned among the entire subscriber identification information, and the determining step is a unique designation to be managed by the specific subscriber management device. It is characterized in that the subscriber identification information to which the identification number is assigned is determined as the access restriction identification information.

More specifically, the call connection restriction is made based on a call connection allowance rate and a call connection wait time, and the base station, when a call connection is attempted from a plurality of terminals having the access restriction identification information at a specific time point, Based on the call connection allowance ratio, a call connection is restricted to only a part of a plurality of terminals that have attempted the call connection, and a terminal having a limited number of calls is accessed at a time when the call connection waiting time elapses from the specific time point. Characterized in that the connection is retried.

Accordingly, according to the call access limiting method of the present invention, when a failure occurs in a specific subscriber management device among a plurality of subscriber management devices, the call connection is restricted only to a terminal in which the subscriber identification information is managed by the specific subscriber management device. By minimizing the number of terminals on which call connection restrictions are made, subscriber complaints due to call connection restrictions can be prevented.

1 is a schematic configuration diagram of a call connection limiting system according to an embodiment of the present invention.
2 is a view for explaining subscriber identification information according to an embodiment of the present invention.
Figure 3 is a schematic configuration diagram of a call connection management apparatus according to an embodiment of the present invention.
Figure 4 is a flow chart for explaining the operation flow in the call connection limiting system according to an embodiment of the present invention.
Figure 5 is a flow chart for explaining the operation flow in the call connection management apparatus according to an embodiment of the present invention.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a view showing a call connection limiting system according to an embodiment of the present invention.

As shown in Figure 1, the call access limiting system according to an embodiment of the present invention, a plurality of subscriber management device (100; a, b, c) for managing the subscriber identification information, the terminal based on the subscriber identification information It has a configuration that includes a call connection management apparatus 200 to perform a call connection restriction for, and a base station 300 for performing a practical call connection restriction for the terminal.

Each of the plurality of subscriber management devices 100 (a, b, c) refers to a device that manages subscriber identification information of a terminal accessing a wireless network, for example, location registration and management of the terminal, and authentication of the terminal. This may be a Home Location Register (HLR) or Home Subscriber Server (HSS).

As described above, the subscriber identification information managed by each of the plurality of subscriber management devices 100 (a, b, c) refers to an identifier capable of identifying a terminal in a wireless network, for example, IMSI (International Mobile Subscriber Identity). Can be.

The IMSI has a form inserted in the terminal's mounted USIM (SIM) card, and its format is unique identification for identifying subscribers, in addition to the country code (MCC) and mobile operator number (MNC), as shown in FIG. 2. As a number (MSIN), it may have a form including a subscriber's phone number.

For example, when the subscriber's phone number is '010-1234-4567', the unique identification number may be assigned as '01234567'.

The shared identification number may be divided into a number band of 4 digits (01234) in front of the total number corresponding to the station number of the subscriber's phone number, and thus, a plurality of subscriber management devices 100; a, b, and c are respectively designated. Only subscriber identification information assigned with a unique identification number in a number band is managed independently.

For example, the subscriber management device 100; a manages only the subscriber identification information starting with the first number bands 1 to 3 of the station number of the subscriber's phone number, and the subscriber management device 100; b shows the station number of the subscriber phone number. Manages only the subscriber identification information whose first number band starts with 4 ~ 6, and in the subscriber management device (100; c), the first number of the station number of the subscriber phone number starts with the remaining number band 6 ~ 9 You can only manage Jeong.

Here, the wireless network refers to a mobile communication network in which each of a plurality of subscriber management devices 100 (a, b, c) is located as a core network equipment, for example, CSFB (Circuit Switched Fall Back) for an existing 3G voice call reception. In addition, a Long Term Evolution (LTE) network, which is a next-generation mobile communication network supporting VoLTE, may correspond to this.

And, the terminal (not shown) refers to a variety of subscriber devices that can be connected to the wireless network, for example, a smart phone, a personal computer, a notebook, and a tablet PC, and the like, and is not limited thereto. Any possible device can be included.

The call access management device 200 checks whether a plurality of subscriber management devices 100; a, b, and c occur, and identifies subscribers managed by each of the plurality of subscriber management devices 100; a, b, and c. Refers to a separate server for managing information as a whole.

The base station 300 refers to a device constituting an access network for call processing by a terminal, and may be, for example, an e-NodeB or NodeB.

On the other hand, according to an embodiment of the present invention, when a failure occurs in any one of a plurality of subscriber management devices (100; a, b, c) located in the core network of the wireless network, call access to the terminal is restricted To work.

Hereinafter, it will be described on the assumption that a device having a failure among a plurality of subscriber management devices 100 (a, b, c) is a subscriber management device (100; b).

As described above, when a failure occurs in a specific subscriber management apparatus 100 (b) among a plurality of subscriber management apparatuses 100 (a, b, c), the base station 300 restricts the call connection of the terminal until the failure is recovered. do.

At this time, it is common for the base station 300 to limit call access to all terminals attempting to access a call, which is not only a terminal in which subscriber identification information is managed by a specific subscriber management device 100 (b) in which a failure actually occurs. It means that the terminal in which the subscriber identification information is managed by the remaining subscriber management apparatus 100 (a, c) is also restricted from the call connection.

As a result, even if a failure occurs only in the specific subscriber management device 100 (b) among the plurality of subscriber management devices 100 (a, b, c), the remaining subscriber management devices 100 (a, c) operating normally It is expected that, as the call access restriction to the terminal in which the subscriber identification information is managed is unnecessarily made, it may lead to serious complaints of the subscriber.

Accordingly, in an embodiment of the present invention, call access is restricted only to a terminal in which subscriber identification information is managed by a specific subscriber management device 100 (b) in which a failure occurs among all terminals attempting to connect to the base station 300. It is intended to propose a method for making the loss, and will be described in detail below.

First, a plurality of subscriber management devices 100, a, b, and c perform a function of managing subscriber identification information.

More specifically, each of the plurality of subscriber management devices 100, a, b, and c performs location registration and authentication of a terminal existing in a wireless network and manages subscriber identification information of each terminal.

At this time, in each of the plurality of subscriber management devices 100, a, b, and c, only the subscriber identification information to which the unique identification number of the designated number band is assigned is independently managed.

As in the previous example, the subscriber management device 100; a manages only subscriber identification information starting with the first number bands 1 to 3 of the station number of the subscriber's phone number, and the subscriber management device 100; b The first number band of the station number of 4 manages only the subscriber identification information starting with 4-6, and the subscriber management device 100; c starts with the first number of the station number of the subscriber phone number starting with the remaining number bands 6-9. Only subscriber identification information can be managed.

In addition, the call connection management device 200 performs a function of integrally managing subscriber identification information.

More specifically, the call connection management device 200 stores and manages the subscriber identification information managed by each of the plurality of subscriber management devices 100 (a, b, c) in a database.

At this time, the call access management apparatus 200 receives the subscriber identification information currently being managed from each of the plurality of subscriber management apparatuses 100 (a, b, c) in real time, thereby receiving the received subscriber identification information for each subscriber management apparatus 100 ).

In addition, the call connection management apparatus 200 performs a function of determining connection restriction identification information.

More specifically, the call access management device 200, if a specific subscriber management device (100; b) of the plurality of subscriber management devices (100; a, b, c) is confirmed that a failure has occurred, a plurality of subscriber management devices ( 100; a, b, and c) are determined as access restriction identification information for limiting call access, only one minute of all subscriber identification information managed in 100.

At this time, the call access management device 200 checks the number band of the unique identification number designated as being managed by the specific subscriber management device 100 (b) identified as having a failure, and of the entire number of subscriber identification information, The subscriber identification information including the unique identification number is determined as access restriction identification information.

In addition, the call connection management apparatus 200 performs a function of providing access restriction identification information.

More specifically, when the determination of the access restriction identification information related to the call access restriction is completed, the call access management apparatus 200 provides the determined access restriction identification information to the base station 300, so that the base station 300 receiving the call Call connection is restricted only to a terminal having the access restriction identification information among all terminals attempting to access.

In addition, the base station 300 performs a function of limiting call access.

More specifically, when the access restriction identification information is received from the call connection management apparatus 200, the base station 300 does not limit the call access to all terminals attempting the call connection, but has the connection restriction identification information. Call access is limited to terminals only.

At this time, the base station 300 checks the subscriber identification information for all terminals attempting the call connection, and as a result of the verification, the call connection is restricted only when the access restriction identification information is applied.

Here, the access limit identification information includes a call access allowance rate and a call access waiting time. Accordingly, the base station 300 restricts the actual call access based on the call access allowance and call access wait time included in the access limit identification information. Will be conducted.

For example, when the call connection allowance rate is '60% ', the call connection waiting time is' 4 seconds (s)', and a call connection is simultaneously attempted from a plurality of terminals having the access restriction identification information at a specific time. Assuming on the assumption, the following call connection restriction operation may be performed.

That is, among a plurality of terminals having the access restriction identification information that simultaneously attempted a call connection at the specific time point, only 60% of the terminals corresponding to the call connection allowance rate are allowed to access the call, while the remaining 40% are connected to the call. This is limited, and as such, the remaining 40% of the terminals with limited call access attempt to retry the call connection after 4 seconds, which is the waiting time for the call connection, to enforce call connection restrictions for all terminals having the access restriction identification information. Will be.

At this time, the base station 300 sets the field values related to the call connection allowance rate (eg, OcAcProbFac) and call connection wait time (eg, OcAcBarTime) with respect to call connection restrictions, for example, a 'System Information Block (SIB) message (eg : SIB 2) 'to the terminal, it is possible for the receiving terminal to check the call connection that the user is trying to be restricted by the base station 300, and to check the reconnection time.

Here, the SIB message refers to a message for transmitting system information of a cell under the control of the device station 300, and is transmitted to a terminal together with a master information block (MIB).

The SIB message is composed of messages of SIB 1 to SIB N that are scheduled and transmitted in a transmission unit called System Information (SI), and typically, the terminal checks information for receiving SIB messages through a MIB message and , SIB 1 message to check the scheduling information of the SI, SIB 2 mesh to check the system information change interval information and paging message reception information.

Hereinafter, the configuration of the call connection management apparatus 200 according to an embodiment of the present invention will be described in more detail with reference to FIG. 3.

3, the call connection management apparatus 200 according to an embodiment of the present invention includes a management unit 210 for managing and managing subscriber identification information, a determination unit 220 for determining access restriction identification information, and It may have a configuration including a providing unit 230 for providing the determined access restriction identification information to the base station 300.

Here, the entire configuration or part of the call connection management apparatus 200 including the management unit 210, the determination unit 320, and the provision unit 230 is implemented as a hardware or software module, or a combination thereof. Can be implemented.

First, the management unit 210 performs a function of integrally managing subscriber identification information.

More specifically, the management unit 210 stores and manages the subscriber identification information managed by each of the plurality of subscriber management devices 100 (a, b, and c) in a database for integrated management.

At this time, the management unit 210 receives the subscriber identification information currently being managed from each of a plurality of subscriber management devices 100 (a, b, c) in real time, thereby classifying the received subscriber identification information for each subscriber management device 100 Can be saved.

Of course, in addition to the method of storing subscriber identification information for each of the plurality of subscriber management devices 100: a, b, c mentioned above, the unique designation to be managed by the plurality of subscriber management devices 100: a, b, c It would also be possible to store only the number band of the identification number.

For reference, as described above, the subscriber management device 100; a manages only the subscriber identification information starting with the first number band 1 to 3 of the station number of the subscriber's phone number, and the subscriber management device 100; b Only the subscriber identification information of the first number band of the subscriber's phone number starting with 4 to 6 is managed, and in the subscriber management device 100; c, the first number of the station number of the subscriber's telephone number is the remaining number band 6 to 9 Only subscriber identification information starting with can be managed.

In addition, the determination unit 220 performs a function of determining access restriction identification information.

More specifically, the determination unit 220, if a plurality of subscriber management devices (100; a, b, c) of a specific subscriber management device (100; b) is confirmed that the failure has occurred through the management unit 210, a number of Only one of the subscriber identification information managed by the subscriber management apparatus 100 (a, b, c) is determined as access restriction identification information for call connection limitation.

At this time, the determination unit 220 checks the number band of the unique identification number designated as being managed by the specific subscriber management device 100 (b) identified as having a failure, and among the entire subscriber identification information, unique identification of the designated number band The subscriber identification information including the number is determined as access restriction identification information.

As described above, the determination of the access restriction identification information avoids an existing method of restricting call access to all terminals attempting to access the call from the base station 300, and only accesses the terminals having the access restriction identification information. This is to ensure that this is done selectively.

In addition, the providing unit 230 performs a function of providing access restriction identification information.

More specifically, when the determination of the access restriction identification information related to the call connection restriction is completed, the providing unit 230 provides the determined access restriction identification information to the base station 300, thereby making a call connection from the base station 300 that received it. Call connection is restricted only to terminals having the access restriction identification information among all the terminals attempted.

At this time, when the access restriction identification information is received from the call access management apparatus 200, the base station 300 checks subscriber identification information for all terminals attempting to access the call, and as a result of the verification, the access restriction Call access is limited only when the identification information is applicable.

As described above, limiting the call connection only when the connection restriction identification information is applied means that the call connection is restricted only to the terminal in which the subscriber identification information is managed in the specific subscriber management apparatus 100 (b) where the failure has occurred. , The terminal in which the subscriber identification information is managed by the remaining subscriber management apparatuses 100 (a, c) that do not have a failure may mean that a normal call connection is possible.

As described above, according to the call access limiting system according to an embodiment of the present invention, when a failure occurs in a specific subscriber management device 100; b among a plurality of subscriber management devices 100; a, b, c By limiting the number of terminals for which call access is restricted by limiting call access to only the terminal in which the subscriber identification information is managed in the specific subscriber management device 100; b, subscribers according to call access limitation Complaints can be prevented.

Hereinafter, a method for checking call processing quality according to an embodiment of the present invention will be described with reference to FIGS. 4 and 5. Here, for convenience of description, the above-described configurations shown in FIGS. 1 and 2 will be described with reference to corresponding reference numbers.

First, with reference to Figure 4 to describe the operation flow in the call connection limiting system according to an embodiment of the present invention.

First, each of the plurality of subscriber management devices 100, a, b, and c performs location registration and authentication of a terminal existing in a wireless network and manages subscriber identification information of each terminal (S110).

At this time, in each of the plurality of subscriber management devices 100, a, b, and c, only the subscriber identification information to which the unique identification number of the designated number band is assigned is independently managed.

Then, the call access management device 200 stores and manages the subscriber identification information managed by each of the plurality of subscriber management devices 100 (a, b, c) in a database (S120-S130).

At this time, the call access management apparatus 200 receives the subscriber identification information currently being managed from each of the plurality of subscriber management apparatuses 100 (a, b, c) in real time, thereby receiving the received subscriber identification information for each subscriber management apparatus 100 ).

Then, the call access management device 200, if it is confirmed that a failure occurs in a specific subscriber management device (100; b) of the plurality of subscriber management devices (100; a, b, c), the plurality of subscriber management devices (100) ; a, b, and c), only one portion of all subscriber identification information managed in the terminal is determined as access restriction identification information for call access restriction (S140).

At this time, the call access management device 200 checks the number band of the unique identification number designated as being managed by the specific subscriber management device 100 (b) identified as having a failure, and of the entire number of subscriber identification information, The subscriber identification information including the unique identification number is determined as access restriction identification information.

Next, when the determination of the access restriction identification information related to the call access restriction is completed, the call access management apparatus 200 provides the determined access restriction identification information to the base station 300, thereby accessing the call from the received base station 300 Among all terminals attempting to, the call connection is restricted only to a terminal having the access restriction identification information (S150).

Subsequently, when the access restriction identification information is received from the call connection management apparatus 200, the base station 300 does not restrict the call access to all terminals attempting the call connection, but the terminals having the access restriction identification information. The call connection is limited only to S160.

At this time, the access limit identification information includes a call access allowance rate and a call access waiting time. Accordingly, the base station 300 restricts the actual call access based on the call access allowance and call access wait time included in the access limit identification information. Will be conducted.

For example, when the call connection allowance rate is '60% ', the call connection waiting time is' 4 seconds (s)', and a call connection is simultaneously attempted from a plurality of terminals having the access restriction identification information at a specific time. Assuming on the assumption, the following call connection restriction operation may be performed.

Hereinafter, the operation of the call connection management apparatus 200 according to an embodiment of the present invention will be described in detail with reference to FIG. 5.

First, the management unit 210 stores and manages the subscriber identification information managed by each of the plurality of subscriber management devices 100 (a, b, and c) in a database (S210).

At this time, the management unit 210 receives the subscriber identification information currently being managed from each of a plurality of subscriber management devices 100 (a, b, c) in real time, thereby classifying the received subscriber identification information for each subscriber management device 100 Can be saved.

On the other hand, the management unit 210 is not only the above method of storing the subscriber identification information for each of the plurality of subscriber management devices (100: a, b, c), but also to be managed by the plurality of subscriber management devices (100: a, b, c) Subscriber identification information may be managed by storing only the number band of the designated unique identification number.

Then, the determination unit 220, if a plurality of subscriber management device (100; a, b, c) of the specific subscriber management device (100; b) is confirmed that the failure has occurred through the management unit 210, a plurality of subscribers Only one portion of all subscriber identification information managed by the management apparatus 100 (a, b, c) is determined as access restriction identification information for call connection restriction (S220-S240).

At this time, the determination unit 220 checks the number band of the unique identification number designated as being managed by the specific subscriber management device 100 (b) identified as having a failure, and among the entire subscriber identification information, unique identification of the designated number band The subscriber identification information including the number is determined as access restriction identification information.

As described above, the determination of the access restriction identification information avoids an existing method of restricting call access to all terminals attempting to access the call from the base station 300, and only accesses the terminals having the access restriction identification information. This is to ensure that this is done selectively.

Subsequently, when the determination of the access restriction identification information related to the call connection restriction is completed, the providing unit 230 provides the determined access restriction identification information to the base station 300, thereby attempting to access the call from the received base station 300. Call connection is restricted only to a terminal having the access restriction identification information among all terminals (S250).

At this time, the base station 300, when the access restriction identification information is received from the call connection management apparatus 200, the base station 300 checks the subscriber identification information for all terminals that attempt to access the call, and as a result of the verification, the access restriction Call access is limited only when the identification information is applicable.

As described above, limiting the call connection only when the connection restriction identification information is applied means that the call connection is restricted only to the terminal in which the subscriber identification information is managed in the specific subscriber management apparatus 100 (b) where the failure has occurred. , The terminal in which the subscriber identification information is managed by the remaining subscriber management apparatuses 100 (a, c) that do not have a failure may mean that a normal call connection is possible.

As described above, according to the call access limiting system according to an embodiment of the present invention, when a failure occurs in a specific subscriber management device 100; b among a plurality of subscriber management devices 100; a, b, c By limiting the number of terminals for which call access is restricted by restricting call access only to the terminals for which subscriber identification information is managed in the specific subscriber management device 100; b, subscribers according to call access restrictions Complaints can be prevented.

Meanwhile, steps of the method or algorithm described in connection with the embodiments presented herein may be directly implemented in hardware or may be recorded in a computer readable medium by being implemented in the form of program instructions that can be performed through various computer means. The computer-readable medium may include program instructions, data files, data structures, or the like alone or in combination. The program instructions recorded on the medium may be specially designed and configured for the present invention, or may be known and usable by those skilled in computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tapes, optical media such as CD-ROMs, DVDs, and magnetic media such as floptical disks. -Hardware devices specifically configured to store and execute program instructions such as magneto-optical media, and ROM, RAM, flash memory, and the like. Examples of program instructions include high-level language code that can be executed by a computer using an interpreter, etc., as well as machine language codes produced by a compiler. The hardware device described above may be configured to operate as one or more software modules to perform the operation of the present invention, and vice versa.

The present invention has been described in detail with reference to preferred embodiments, but the present invention is not limited to the above-described embodiments, and the technical field to which the present invention pertains without departing from the gist of the present invention claimed in the claims below. Anyone with ordinary knowledge in the technical idea of the present invention extends to the extent that various modifications or modifications are possible.

According to the call access limiting method of the present invention, in a base station that delivers a message transmitted from a message center to a terminal, a wireless network environment is provided by transmitting a message transmitted from the message center to the terminal only when security setting with the terminal is completed. In this poor case, the normal transmission of a message is possible, and as it exceeds the limitations of the existing technology, not only the use of the related technology but also the commercial or sales potential of the applied device is sufficient, and it can be carried out realistically and clearly. To a certain extent, it is an invention with industrial applicability.

100: subscriber management device
200: call connection management device
210: management unit 220: decision unit
230: providing unit
300: base station

Claims (3)

When a failure occurs in a specific subscriber management device among a plurality of subscriber management devices that manage the subscriber identification information, the call access management device in the specific subscriber management device where a failure occurs among all subscriber identification information managed by the plurality of subscriber management devices A determining step of determining managed subscriber identification information as access restriction identification information; And
The call connection management apparatus provides the determined connection restriction identification information to the base station apparatus, and only the terminal having the subscriber identification information managed by the specific subscriber management apparatus where a failure occurs among all terminals attempting to access the call from the base station apparatus And a providing step for limiting call access. According to claim 1,
Each of the plurality of subscriber management devices,
Manages only the subscriber identification information assigned with the unique identification number of the designated number band among all subscriber identification information,
The determining step,
A call access limiting method characterized in that the subscriber identification information assigned with a unique identification number designated to be managed by the specific subscriber management device is determined as the access restriction identification information. According to claim 1,
The call connection restrictions,
It is made based on the allowed call connection rate and waiting time for call connection.
The base station,
When a call connection is attempted from a plurality of terminals having the connection restriction identification information at a specific point in time, access is limited to only some of the terminals among the plurality of terminals attempting the call based on the call connection allowance ratio. A call connection limiting method characterized in that a terminal having a limited access to the call attempts to retry a call connection at a time when the call connection waiting time elapses from a time point.

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