KR20070000752A - Protecting method for missing of sms message in msc - Google Patents

Abstract

A method for preventing the loss of a short message in an MSC is provided to enable the MSC to perform a function for preventing the messages loss, caused by congestion of short messages, thereby reducing loads of an SMSC and addressing a problem that a subscriber has to attempt to re-transmit the short message. A method for preventing the loss of a short message in an MSC(Mobile Switching Center) comprises the following steps of: monitoring whether there is congestion of short messages in an SMSC(Short Message Service Center)(S301); if so, generating a short message for informing that a short message is arbitrarily transmitted, and then transmitting the generated short message to a caller(S305); storing a short message, received during congestion of the short messages, in a special memory area(S306); monitoring whether the short message congestion is released(S307); and if so, re-transmitting the short message stored in the special memory area(S308,S309).

Description

Protecting method for missing of SMS message in MSC}

1 is a schematic configuration of a short message service showing a general method of providing a short message service.

2 is a block diagram showing a mobile switching center (MSC) according to the present invention;

3 is a flowchart illustrating a method for preventing short message loss in a mobile switching center according to an exemplary embodiment of the present invention.

The present invention relates to a short message service. More particularly, the present invention relates to a method for preventing the loss of a short message at a mobile switching center for preventing the loss of a short message generated when the short message is congested.

Short Message Service (SMS) is a point-to-point service that allows ETSI (European Telecommunication Standard Institute) to send and receive up to 155 bytes of characters between terminating and terminating devices to be applied to European digital cellular communication systems. It was first proposed by defining it. The short service can be delivered regardless of the operating state of the terminal because the short message can be delivered in the form of a database character using the access channel and the paging channel as well as the traffic channel.

Currently, short message service is provided between mobile terminal and SME (Short Message Entity, external client) as well as mobile terminal period.

1 is a schematic diagram of a short message service showing a general method of providing a short message service. As shown in FIG. 1, the short message service is provided by a Short Message Service Center (SMSC) 200, and the mobile switching center (MSC) 100 of a mobile communication network when the mobile terminal is a service target. And by the SMSC 200, the SMS server 300 and the SMSC 200 when the SME is a service target.

The SMSC 200 may be connected to and used in both GSM (Groupe Special Mobile) and IS-41C networks. SMSC is an independent node with its own Signaling Point Code (SPC) in SS7 (Signalling System 7) network. It is connected to the Home Location Register (HLR) and the Mobile Service Center (MSC) to determine the location of the receiver and thus the PLMN. It delivers short text to mobile subscribers through Public Land Mobile Network.

The SMSC 200 is connected to external clients called Short Message Entities (SMEs). For example, the Voice Mail System has a voice mail alert SME to provide Voice Mail Alert functionality. The SMSC is connected to SMEs through the Short Message Client Interface (SMCI) based on TCP / IP. Programs that let you send, receive, and manage short text messages through these interfaces are called Short Message Clients (SMCs). SMCs act as gateways to other networks and provide user interfaces or local functions. If only the clients, SMSC, and TCP / IP are provided, the clients may be on a computer with SMSC, or on a computer in another location. In some cases, it also supports X.25 and the Short Messge Peer to Peer Protocol (SMPP). SMPP is the European Telecommunications Standards Institute (ETSI) Protocol.

Short messages received from the SMC are stored in an internal database according to the mobile recipient number. Then, using the SS7 Transaction Capability Application Part (TCAP), a route inquiry is made to the Home Location Register (HLR) to find the location information of the receiver. Upon successfully receiving information about the route from the HLR, the SMSC attempts to send a short message to the MSC 100 that is currently connected to the sender. If the short message is not delivered properly due to lack of connection with the subscriber, the SMSC may periodically resend the short message. If necessary, after the short message, the SMSC 200 notifies the HLR of the delivery result and updates the internal information table. When connected with the mobile subscriber will receive a confirmation notification from the HLR and MSC (100).

The SMSC 200 transmits a short message through the above-described method in the normal state, but when the short message is generated by itself or when the short message is generated by the SMS server 300 or the MSC 100, the short message is generated. Stored and forwarded until the called subscriber can receive, and when the congestion of the short message lasts for a long time, the SMSC 200 continuously attempts to retransmit the short message or discards it.

In the current short message usage statistics based on Korea, it can be seen that the usage of short messages is very high on a specific anniversary such as Christmas, first snowy day, and end of the year at the end of the year.

However, the current short message is prevented from being lost entirely because the SMSC (200) is processed, there is a problem that puts a load on the SMSC (200), the customer's text transmission is delayed by such a load, the customer has to try to resend the text There is a problem that makes you feel bad.

Accordingly, the present invention has been proposed to solve the above problems and to meet the above demands. When the short message is congested in the mobile switching center, the SMSC prevents the loss of the message corresponding to the congestion of the short message. The purpose is to reduce the load and eliminate subscribers' attempts to resend short messages.

According to an aspect of the present invention, there is provided a method for preventing short message loss at a mobile switching center, comprising: a first step of monitoring whether a short message is congested in a short message service center; In a short message congestion situation, transmitting a short message informing the short message sender of the short message transmission; Storing the received short message in a separate memory area; Monitoring a short message burst; And a fifth step of transmitting a short message stored in the separate memory area when the short message congestion is released.

In the third step, the received short message may be stored in a memory queue, or the received short message may be stored in a file, and the filed short message may be stored in a file database.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, detailed descriptions of well-known functions or configurations will be omitted if it is determined that the detailed description of the present invention may unnecessarily obscure the subject matter of the present invention. Terms to be described later are terms defined in consideration of functions in the present invention, and may be changed according to intentions or customs of users or operators. Therefore, the definition should be made based on the contents throughout the specification.

Hereinafter, a mobile telephone switching station according to an embodiment of the present invention will be described with reference to FIG. 2 is a block diagram showing a mobile switching center (MSC) according to the present invention.

As shown in FIG. 2, the MSC 100 of the present invention includes a call exchanger 110, an SMS processor 120, a memory queue 130, and / or a file DB 140.

The call exchanger 110 performs a call connection for the call between the caller and the called party.

The SMS processing unit 120 delivers the short message received from the sender or the SMSC 200 to the called party, and receives a message about the occurrence or release of the short message congestion from the SMSC 200 to monitor the short message congestion or release (determination) In case of congestion, short message is prevented. The short message loss prevention operation is performed until the short message runaway release, and when the short message runaway is released, a short message for preventing loss is transmitted to the called party.

In addition, if the SMS processing unit 120 does not receive a response to the short message sent from the SMSC 200 by the short message congestion of the SMSC 200, it generates an SMS message for sending a short message to the sender by itself. The short message sent response SMS message generated when the short message is congested prevents the sender from repeatedly attempting to resend according to the unsent short message. Hereinafter, the SMS message retransmission prevention message is referred to as a short message.

The memory queue 130 uses a first input first output (FIFO) scheme and stores a short message provided by the SMS processing unit 120 that performs a short message loss prevention operation.

The file DB 140 stores a file of the short message provided by the SMS processing unit 120 which performs the short message loss prevention operation. At this time, the SMS processing unit 120 performs an operation of creating a short message to be stored in the file DB 140 as a file.

Hereinafter, an operation of preventing short message loss in an MSC according to an embodiment of the present invention will be described with reference to FIG. 3. 3 is a flowchart illustrating a method for preventing short message loss at a mobile switching center according to an exemplary embodiment of the present invention.

As shown in FIG. 3, the SMS processing unit 120 of the MSC 100 monitors whether a short message congestion has occurred through a message on whether the congestion situation is received from the SMSC 200 (S301).

As a result of such monitoring, if the short message is not busy (S302), the SMS processing unit 120 receives a response message for sending an SMS message (S303), and transmits the received response message to the sender (S304).

 On the other hand, if it is determined that the congestion of the short message occurs as a result of the monitoring (S302), the SMS processing unit 120 performs a function of preventing the short message.

That is, in order to prevent the sender from attempting to retransmit the short message according to the short message transmission delay, the SMS processing unit 120 first transmits the short message for preventing the SMS message resending to the sender (S305). ).

Thereafter, the SMS processing unit 120 stores the currently received short message in the memory queue 130 provided for preventing the loss, thereby preventing the received short message from being lost. Alternatively, the SMS processing unit 120 files a short message currently received and converts the short message into a file in the file DB 140 (S306).

In the case of storing in the memory queue 130, a fast loss prevention process is possible without a separate message processing operation, but there is a short time to store. In the case of storing in the file DB 140, a long storage period reduces the loss rate. It can protect other associated systems such as SMSC by leaving no information about short messages in memory.

When the SMS processing unit 120 temporarily stores the short message to prevent the short message from being lost, the SMS processing unit monitors whether the short message congestion situation is released through the message received from the SMSC 200 (S307).

When the SMS processing unit 120 determines that the short message congestion situation is released as a result of the monitoring (S307) (S308), the SMS processing unit 120 temporarily transmits the short message to the SMSC 200 or the called terminal (S309). That is, the SMS processing unit 120 transmits the short message stored in the memory queue 130 according to the input order, or reads the filed short message stored in the file DB 140 to make a normal short message and inputs it into the input order. Send along.

Although the contents of the present invention have been described with reference to the embodiments, the embodiments of the present invention are merely illustrative of the present invention and should not be construed as limiting the scope of the present invention. Those skilled in the art to which the present invention pertains may modify or alter the present invention in various forms within the spirit and scope described in the claims herein.

The present invention has the effect of reducing the load of the SMSC and preventing the short message from being lost by the short message congestion in the SMSC, and informs the sender of the short message processing so that the sender does not attempt to resend the short message.

Claims (3)

A method for preventing the loss of short messages at a mobile switching center, A first step of monitoring whether the short message is congested in the short message service center; If the short message is congested, a second step of arbitrarily generating a short message informing that the short message has been sent and sending the message to the caller; Storing the short message received when the short message is congested in a separate memory area; Monitoring a short message burst; And And a fifth step of retransmitting the short message stored in the separate memory area when the short message congestion is released. The method of claim 1, And wherein said third step stores said received short message in a memory queue. The method of claim 1, And the third step is to convert the received short message into a file and store the filed short message in a file database.

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