KR100886833B1 - Method and server for improving incoming quality of short message service by using mobile communication network - Google Patents

Abstract

A method for improving the receipt quality of a short message service by using a mobile communication network and a server therefor are provided to transmit a short message after including a short message priority in it. A calling-side mobile terminal receives a key input or command by the manipulation of a user. A short message is generated in response to a short message request signal for transmitting it to a called-side mobile terminal. The short message is transmitted to the mobile communication network. A mobile switching center of the mobile communication network passes through a base station transmitter and base station controller. After the short message request signal is received from the calling terminal, a calling-side short message transfer signal is transmitted to an SMS center (S310). A destination node information request signal is transmitted to a home location register(S320). A destination node information response signal which is the response to the destination node information request signal to the SMS center(S330). The destination short message transfer signal is transmitted to the mobile switching center(S340).

Description

Method and Server for Improving Incoming Quality of Short Message Service by Using Mobile Communication Network}

The present invention relates to a method and a server for improving the incoming quality of a short message service using a mobile communication network. More specifically, in the process of transmitting a short message using a mobile communication network, when the calling mobile communication terminal transmits the short message to the called mobile communication terminal, the mobile communication network in the area where the called mobile communication terminal is located is temporarily unstable. If a short message is not transmitted from the switching center to the terminating mobile terminal, the SMS center and the home location register manage the terminating mobile terminal as unreceivable. When the terminating mobile communication terminal is in an unreceivable state in the SMS center, when the terminating mobile communication terminal transmits a signal for requesting the destination node information for the short message to the home location register, the receiving mobile communication terminal includes the short message priority field so that the terminating mobile communication terminal transmits the mobile communication network. The present invention relates to a method and a server for improving the incoming quality of a short message service using a mobile communication network that can receive a short message even if the location registration is not performed.

Recently, as computers, electronics, and communication technologies have advanced dramatically, various wireless communication services using wireless networks have been provided. Accordingly, a service provided by a mobile communication system using a wireless communication network is developing into a multimedia communication service for transmitting data such as circuit data, packet data, and the like, as well as a voice service.

Since the Internet communication service, which is symbolized by the World Wide Web, has been in the spotlight, communication services have already made a big difference in the lives of most people in all aspects of society, economy and politics. In other words, the Internet is recognized as a part of life so that the Internet is impossible to imagine, and in recent years, the diffusion of high-speed communication network, etc. is increasing greatly in order to use various communication services in a better environment.

However, communication services such as the Internet using a computer have advantages in that the transmission speed is high and data input is convenient. However, communication services such as the Internet can no longer be used once the computer is out of the environment. There was a disadvantage of using the service.

In order to overcome these drawbacks, many communication companies have recently developed a new technology called wireless Internet to provide communication services such as the Internet beyond space. Wireless Internet refers to an environment and technology in which a user can use an Internet service through a wireless network while using a mobile communication terminal. The development of mobile communication technology and the rapid increase of mobile communication terminal penetration have developed this wireless Internet environment.

Thanks to the development of the wireless Internet environment, mobile operators and other telecommunication operators are further promoting the use of the wireless Internet by providing various and useful services to the users of the wireless Internet. Such wireless Internet services include text messages, e-mails, cards, letters, games, geography / life information, learning, cartoons, and the like.

In particular, the short message service refers to a service that delivers a text message of limited length from a computer connected to the Internet to a mobile communication terminal or between mobile communication terminals regardless of whether a mobile subscriber is in a call state. Short message service that can transmit texts of about 80 bytes (40 characters in Korean, 80 characters in English) to LCD screen of mobile communication terminal has exploded in utilization rate by expanding usage range from personal use to corporate use. to be. In other words, the recent SMS goes beyond simple interpersonal message transmission, and can be used for group transmission, reservation transmission, email arrival notification, personal information management, stock information notification, product information notification, financial information notification, and callback number service. It is widely used for various purposes.

However, as the mobile communication system evolves, related standards for short message services must be newly defined according to the evolutionary path. That is, according to whether the current 2G (2.5G) or 2.5G (2.5G) mobile communication system is evolving into synchronous 3G (CDMA 2000) or asynchronous 3G (WCDMA), it is appropriate to meet the specification for short message service. It must be newly defined.

Currently, the WCDMA communication method is a wireless protocol recommended by IMT-2000 and is provided or prepared for by many communication service providers around the world. W-CDMA systems have a high call quality and use a spread spectrum method, which is suitable for transmitting a large amount of data. The WCDMA communication method is adopted by most countries, and many institutions such as Korea, Europe, Japan, the United States, and China form the 3rd Generation Partnership Project (3GPP) to develop technical specifications for WCDMA. have.

In the conventional SMS transmission method using the WCDMA network, when the WCDMA network in the area where the terminating mobile communication terminal is located is temporarily unstable while the originating mobile communication terminal transmits a short message to the terminating mobile communication terminal, the mobile telecommunication switching center receives the incoming mobile communication. The short message cannot be transmitted to the communication terminal, and the SMS center and the home location register manage the incoming mobile communication terminal as an unreceivable state.

That is, in the conventional SMS transmission method using the WCDMA network, the WCDMA network in the area where the terminating mobile communication terminal is located is temporarily unstable, thus causing communication failure between the terminating mobile terminal and the WCDMA network. When the communication is stable, the receiving mobile communication terminal may receive the short message only after performing a location registration procedure (ie, a periodic location registration procedure or a local mobile location registration procedure) on the WCDMA network.

However, in the conventional SMS transmission method using the WCDMA network, when a terminating mobile communication terminal is switched from being able to receive an SMS to a callable state, a short message transmitted by the originating mobile communication terminal is received. There was a disadvantage in that time was delayed.

Therefore, when the terminating mobile communication terminal is in an unreachable state, the SMS center includes a field set to increase the SMS incoming priority when transmitting a signal requesting the destination node information for the short message from the SMS to the home location register. Technology development is required.

In order to solve the above problems, the present invention, in the process of transmitting a short message using a mobile communication network, when the calling mobile communication terminal transmits a short message to the destination mobile communication terminal, the mobile communication network in the area where the destination mobile communication terminal is located If the short message is not transmitted from the mobile communication switching center to the terminating mobile communication terminal due to the temporary instability, the SMS message center and the home location register manage the terminating mobile terminal in an unreceivable state. When the terminating mobile communication terminal is in an unreceivable state in the SMS center, when the terminating mobile communication terminal transmits a signal for requesting the destination node information for the short message to the home location register, the receiving mobile communication terminal includes the short message priority field so that the terminating mobile communication terminal transmits the mobile communication network. It is an object of the present invention to provide a method and a server for improving the reception quality of a short message service using a mobile communication network that can receive a short message even if the location registration is not performed again.

According to an aspect of the present invention, there is provided a server for transmitting a short message to an incoming mobile communication terminal in association with a mobile communication switching center and a home location register, comprising: a communication unit interworking with the mobile communication switching center and the home location register; Control the communication unit to transmit a destination node information request signal to the home location register; and when a destination node information response signal is received from the home location register, transmit a destination side short message transfer signal to the mobile communication switching station; When receiving a short message forwarding signal from a mobile communication switching center, controlling to transmit a priority destination node information request signal including a short message priority field to the destination node information request signal to the home location register; Control unit; And a storage unit which stores the called node information request signal, the called node information response signal, the called side short message transfer signal, the called side short message transfer impossible signal, and the priority called node information request signal. It provides a server for improving the incoming quality of the short message service using a mobile communication network.

In addition, according to another object of the present invention, in a method for transmitting a short message to an incoming mobile communication terminal by a short message service center (SMS) in conjunction with a mobile communication switching center and a home location register, (a) the home location register Transmitting the called node information request signal to the server; (b) when the receiving node information response signal is received from the home location register, transmitting a called party short message transmission signal to the mobile communication switching center; (c) receiving a signal for disabling a called party's short message from the mobile communication switching center; And (e) transmitting a priority destination node information request signal including a short message priority field to the destination node information request signal to the home location registrar. Provides a way to improve quality.

As described above, according to the present invention, in the process of transmitting a short message using the mobile communication network, when the calling mobile communication terminal transmits the short message to the called mobile communication terminal, the mobile communication network in the area where the called mobile communication terminal is located is located. If the mobile communication exchange fails to transmit a short message to the destination mobile communication terminal, the SMS center and the home location register manage the destination mobile terminal as unreachable. When the terminating mobile communication terminal is in an unreceivable state in the SMS center, when the terminating mobile communication terminal transmits a signal for requesting the destination node information for the short message to the home location register, the receiving mobile communication terminal includes the short message priority field so that the terminating mobile communication terminal transmits the mobile communication network. In case of communicating with the user again, even if the location registration is not made, the short message can be received.

According to the present invention, when a terminating mobile communication terminal is switched from an impossible SMS reception state (when the mobile communication network of the location is temporarily unstable) to a callable state (when the mobile communication network of the located area is stable), the mobile terminal registers its location with the mobile communication network. Even if a procedure (ie, a periodic location registration procedure or a local mobile location registration procedure) is not performed, the short message transmitted by the calling mobile communication terminal can be received.

That is, when communication between the incoming mobile communication terminal and the mobile communication network receives the short message before performing the location registration stop, it is possible to shorten the time until the short message is received, and the SMS incoming quality can be improved. It has an effect.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

1 is a block diagram schematically illustrating a system for improving a call quality of a short message service in a mobile communication network according to an embodiment of the present invention.

The system for improving the incoming quality of the short message service in the mobile communication network according to an embodiment of the present invention is the outgoing mobile terminal 110, the incoming mobile terminal 112, the mobile communication network 120 and the SMS center (Short Message Service) Center 130).

The outgoing mobile communication terminal 110 refers to a terminal connected to the mobile communication network 120 to perform normal voice call and data communication through wireless communication. In addition, the outgoing mobile communication terminal 110 performs a function of transmitting a short message to the incoming mobile communication terminal 112 via the mobile communication network 120.

The terminating mobile communication terminal 112 refers to a terminal connected to the mobile communication network 120 to perform normal voice call and data communication by wireless communication. In addition, the incoming mobile communication terminal 112 performs a function of receiving a short message from the outgoing mobile communication terminal 110 via the mobile communication network 120.

The mobile communication network 120 is a communication network capable of supporting synchronous or asynchronous communication. The mobile communication network 120 includes a base station transmitter 122, a base station controller 123, a mobile communication switching center 124, and a home location register 125. 110 and the mobile communication terminal 112 is connected wirelessly, the outgoing mobile terminal 110 and the mobile terminal 112 is a mobile communication such as voice communication service, wireless data service or wireless Internet service, short message service, etc. It performs various functions to perform service.

The base station transmitter 122 may be a base transceiver station (BTS) when supporting synchronous, and may be a Node-B when supporting asynchronous, and may be an outgoing mobile communication terminal (Traffic channel) of the signaling channel ( It receives the SMS request signal from the 110, and transmits the received SMS request signal to the base station controller 123.

In addition, the base station transmitter 122 performs baseband signal processing, wired / wireless conversion, and transmission and reception of a wireless signal, such that a network end point is directly connected to the originating mobile communication terminal 110 and the terminating mobile communication terminal 112. Means a device.

The base station controller 123 may be a base station controller (BSC) when supporting synchronous and may be a radio network controller (RNC) when supporting asynchronous, and may control the base station transmitter 122 to control the originating mobile communication terminal. (110) and radio channel assignment and release to the terminating mobile terminal 112, transmission output control of the originating mobile terminal 110, terminating mobile terminal 112 and the base station transmitter 122, inter-cell soft handoff ( Soft Handoff and Hard Handoff Determination, Transcoding and Vocoding, Global Positioning System (GPS) clock distribution, and operation and maintenance functions for the base station.

In addition, the base station controller 123 transmits the SMS request signal received through the base station transmitter 122 to the mobile communication switching center 124.

The mobile communication switching center 124 performs basic and additional service processing for providing a voice communication service, incoming and outgoing call processing of a subscriber, location registration procedure and handoff procedure, and interworking with other networks.

When the mobile communication switching center 124 receives the SMS request signal from the calling mobile communication terminal 110, the mobile communication switching center 124 transmits the calling short message transmission signal to the SMS center 130.

Here, the calling short message transmission signal may be a MO_Forward_SM signal included in the 3GPP standard. Of course, this is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains a variety of originating short message transmission signal without departing from the essential characteristics of the present invention. Modifications and variations will be applicable.

When the mobile communication switching center 124 receives the called party short message transmission signal from the SMS center 130, the mobile communication switching center 124 checks whether or not the incoming mobile communication terminal 112 is capable of receiving the short message.

Here, the called short message transfer signal may be an MT_Forward_SM signal of 3GPP standard. Of course, this is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains variously to the destination short message transmission signal without departing from the essential characteristics of the present invention. Modifications and variations will be applicable.

As a result of the check, when the terminating mobile communication terminal 112 is not in a state capable of receiving a short message, the mobile communication switching center 124 indicates that the terminating mobile communication terminal 112 is not capable of receiving a short message to the SMS center 130. A signal indicating that the called party's short message is not transmitted is indicated.

Here, the called short message transfer impossible signal may be an MT_Forward_SM_Nack signal included in the 3GPP standard. Of course, this is merely an example of the technical idea of the present invention, and those skilled in the art to which the present invention pertains to various signals that cannot be delivered to the recipient side short message within a range not departing from the essential characteristics of the present invention. Modifications and variations will be applicable.

Home Location Register (HLR) 125 is a database that stores service profiles related to mobile subscriber information. The terminal identification numbers of the outgoing mobile terminal 110 and the terminating mobile terminal 112 are described. (MIN: Mobile Identification Number), terminal specific number (ESN: Electronic Serial Number) and service information is stored to store the subscriber information.

When the home location register 125 receives the destination node information request signal from the SMS center 130, the home location register 125 transmits the destination node information response signal, which is a response signal of the destination node information to the short message, to the SMS center 130.

Here, the called node information request signal may be a SendRoutingInfoForSM signal included in the 3rd Generation Partnership Project (3GPP) 23.040 standard, and the called node information response signal may be a SendRoutingInfoForSM_Ack signal.

Of course, this is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention belongs does not depart from the essential characteristics of the present invention. Various modifications and variations of the response signal may be applicable.

When the home location register 125 receives the short message incoming impossible signal for the incoming mobile terminal 112 from the SMS center 130, the home location register 125 changes the incoming state for the incoming mobile terminal 112 to the short message incoming state. Set and transmits a short message transmission status report signal to the SMS center 130.

Here, the short message transmission status report signal may be a Report_SM_deliveryStatus signal included in the 3GPP standard. Of course, this is merely an example of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may vary the short message transmission status report signal without departing from the essential characteristics of the present invention. Modifications and variations will be applicable.

When the home location register 125 according to an embodiment of the present invention receives the priority destination node information request signal from the SMS center 130, the short message transmission state for the incoming mobile communication terminal 112 cannot be received. Although the state has received the priority node information request signal including the short message priority field in the receiver node information request signal, the receiver node information response signal is transmitted to the SMS center 130.

Here, the short message priority field may be SM_RP_PRI of 3GPP 29.002 standard. Of course, this is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains variously change the short message priority field without departing from the essential characteristics of the present invention. And modifications may be applicable.

In addition, the priority destination node information request signal means a signal including a short message priority field in the destination node information request signal.

The SMS center 130 interworks with the mobile communication network 120 and transmits the short message received from the calling mobile communication terminal 110 to the called mobile communication terminal 112 corresponding to the preset calling number.

The SMS center 130 transmits the destination node information request signal to the home location register 125 when receiving the calling short message transmission signal from the mobile communication switching center 124.

When the SMS center 130 receives the destination node information response signal from the home location register 125, the SMS center 130 transmits the destination side short message transmission signal to the mobile communication switching center 124.

When the SMS center 130 receives the incoming short message forwarding signal from the mobile communication switching center 124, the SMS center 130 transmits a short message incoming impossible signal to the home location register 125.

When there is an unreceived short message, the SMS center 130 according to an embodiment of the present invention transmits a priority destination node information request signal including a short message priority field to the destination node information request signal to the home location register 125. send.

When the SMS center 130 according to the embodiment of the present invention receives the called node information response signal, which is a response signal to the priority called node information request signal, from the home location register 125, the called side short message transfer signal is moved. To the communication switching center 124.

That is, although the SMS center 130 manages the short message reception state of the short message to the destination mobile communication terminal 112, the home location register 125 does not receive the short message, but requests the destination node information to the home location register 125. Since the priority destination node information request signal including the short message priority field is transmitted to the signal, the destination node information response can be received from the home location register 125, and the called party short message according to the received node information response is received. The transmission signal may be transmitted to the mobile communication switching center 124.

2 is a block diagram schematically showing an SMS center according to an embodiment of the present invention.

SMS center 130 according to an embodiment of the present invention is configured to include a communication unit 210, the control unit 220 and the storage unit 230.

In the present invention, the SMS center 130 is described as including only the communication unit 210, the control unit 220 and the storage unit 230, but this is merely illustrative of the technical idea of the present invention, Those skilled in the art to which the invention belongs will be applicable to various modifications and modifications to the components included in the SMS center 140 without departing from the essential characteristics of the present invention.

The communication unit 210 is a communication means for performing a function of interworking with the mobile communication network 120, and performs a function of transmitting and receiving various data.

The control unit 220 according to an embodiment of the present invention is a control means for controlling the overall function of the SMS center 130, the communication unit 210 to control the receiving side short message transmission signal from the mobile communication switching center 124 If the home location register 125 transmits the destination node information request signal.

When receiving the destination node information response signal from the home location register 125, the controller 220 transmits the destination side short message transmission signal to the mobile communication switching center 124.

When the control unit 220 receives the incoming short message forwarding signal from the mobile communication switching center 124, the control unit 220 transmits a short message incoming impossible signal to the home location register 125.

When there is an unreceived short message, the control unit 220 according to an embodiment of the present invention transmits a priority destination node information request signal including a short message priority field to the destination node information request signal to the home location register 125. send.

The control unit 220 according to an embodiment of the present invention, when receiving the destination node information response signal, which is a response signal to the priority destination node information request signal from the home location register 125, the mobile terminal receives a short message transmission signal to the destination side message; Transfer to the exchange 124.

That is, although the home location register 125 manages the short message transmission state for the incoming mobile communication terminal 112 to the short message incoming state, the home location register 125 controls the priority destination node information with the home location register 125. Since the request signal is transmitted, the destination node information response signal can be received from the home location register 125, and the destination side short message transmission signal can be transmitted to the mobile communication switching center 124 according to the received destination node information response signal. It is.

Storage unit 230 is a storage means for storing various data required for driving the SMS center 130, the destination node information request signal, the destination node information response signal, the destination side short message transmission signal, the destination side short message transmission impossible signal And storing a priority destination node information request signal and the like.

3 is a flowchart illustrating a method for improving the incoming quality of a short message service in a mobile communication network according to a practical example of the present invention.

The outgoing mobile terminal 110 generates a short message request signal for transmitting a short message to the incoming mobile terminal 112 by receiving a key or command by a user's manipulation and then transmitting the short message request signal to the mobile communication network 120.

The mobile communication switching center 124 of the mobile communication network 120 receives the short message request signal from the originating mobile communication terminal 110 via the base station transmitter 122 and the base station controller 123 and then sends it to the SMS center 130. The side short message transmission signal is transmitted (S310).

In S310 of FIG. 3, the calling mobile telecommunication switching center and the called mobile telecommunication switching center are distinguished, and the calling mobile telecommunication switching center (not shown) transmits the calling short message transmission signal to the SMS center 130. Since the concept of an exchange station is a mobile communication exchange station in the area where the outgoing mobile communication terminal 110 is located, the present invention will be described using only the mobile communication exchange station 124 shown in FIG. Of course, this is merely illustrative of the technical idea of the present invention, those of ordinary skill in the art will be applicable to various modifications and variations within the scope without departing from the essential characteristics of the present invention.

The SMS center 130 transmits the destination node information request signal to the home location register 125 when receiving the calling short message transmission signal from the mobile communication switching center 124 (S320).

When the home location register 125 receives the destination node information request signal from the SMS center 130, the home location register 125 transmits the destination node information response signal, which is a response signal of the destination node information to the short message, to the SMS center 130 (S330). ).

When the SMS center 130 receives the destination node information response signal from the home location register 125, the SMS center 130 transmits the destination side short message transmission signal to the mobile communication switching center 124 (S340).

In step S340 of FIG. 3, the source mobile telecommunication switching center and the destination mobile telecommunication switching center are distinguished from each other, and the SMS center 130 is described as transmitting a short message transmission message to the destination mobile telecommunication switching center (not shown). Since the concept of the communication switching station is a mobile communication switching station in the area where the terminating mobile communication terminal 112 is located, the present invention will be described using only the mobile communication switching station 124 shown in FIG. Of course, this is merely illustrative of the technical idea of the present invention, those of ordinary skill in the art will be applicable to various modifications and variations within the scope without departing from the essential characteristics of the present invention.

When the mobile communication switching center 124 receives the called party short message transmission signal from the SMS center 130, it checks whether the incoming mobile communication terminal 112 is capable of receiving the short message. As a result of the check, when the incoming mobile communication terminal 112 is not in a state capable of receiving a short message, the mobile communication switching center 124 indicates that the incoming mobile communication terminal 112 is not in a short message reception state to the SMS center 130. The called party short message transmission impossible signal is transmitted (S350).

For example, when the mobile communication network 120 in the region where the terminating mobile communication terminal 112 is located is unstable or in a shaded area, the mobile communication switching center 124 cannot transmit a short message to the terminating mobile communication terminal 112. In addition, the mobile communication switching center 124 transmits a signal for transmitting a short message to the called party to the SMS center 130.

In S350 of FIG. 3, the calling mobile telecommunication switching center and the called mobile telecommunication switching center are distinguished, and the called mobile telecommunication terminal transmits a signal for not receiving a short message to the called party to the home location register 125. Since the concept is a mobile communication switching center of the area where the terminating mobile communication terminal 112 is located, the present invention will be described using only the mobile communication switching station 124 shown in FIG. Of course, this is merely illustrative of the technical idea of the present invention, those of ordinary skill in the art will be applicable to various modifications and variations within the scope without departing from the essential characteristics of the present invention.

When the SMS center 130 receives the incoming short message forwarding signal from the mobile switching center 124, the SMS center 130 transmits a short message incoming impossible signal to the incoming mobile communication terminal 112 to the home location register 125.

When the home location register 125 receives the short message incoming impossible signal for the incoming mobile terminal 112 from the SMS center 130, the short message to the incoming mobile terminal 112 of the incoming mobile terminal 112 is received. The short message transmission status report signal is transmitted to the SMS center 130 and the short message reception state is set to the short message reception state (S360).

The SMS center 130 transmits a priority destination node information request signal to the home location register 125 (S370).

Here, the short message priority field is an SM_RP_PRI defined in the 3GPP 29.002 standard, which can be set by the SMS center 130 when the SMS center 130 transmits the destination node information request signal to the home location register 125. It means the value.

When the home location register 125 receives the priority destination node information request signal from the SMS center 130, the short message transmission state for the destination mobile communication terminal 112 is not available for receiving the short message, but the priority destination node. Since the information request signal is received, the destination node information response signal is transmitted to the SMS center 130 (S380).

When the SMS center 130 receives the destination node information response signal from the home location register 125, the SMS center 130 transmits the destination side short message transmission signal to the mobile communication switching center 124 (S390).

That is, the home location register 125 manages the state of the incoming mobile communication terminal 112 as the short message incoming state, but if there is an unreceived short message, the mobile communication switching center ( 124 attempts to resend the short message to the terminating mobile communication terminal 112.

In step S390 of FIG. 3, the mobile communication switching center distinguishes between the calling mobile telecommunication switching center and the receiving mobile telecommunication switching center, and the SMS center 130 transmits the incoming short message transmission signal to the destination mobile telecommunication switching center (not shown). Since the concept of the communication switching station is a mobile communication switching station in the area where the terminating mobile communication terminal 112 is located, the present invention will be described using only the mobile communication switching station 124 shown in FIG. Of course, this is merely illustrative of the technical idea of the present invention, those of ordinary skill in the art will be applicable to various modifications and variations within the scope without departing from the essential characteristics of the present invention.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

As described above, in the present invention, when the calling mobile terminal transmits the short message to the called mobile terminal in the process of transmitting the short message using the mobile communication network, the mobile communication network in the area where the called mobile terminal is located is temporarily If the mobile communication exchange fails to transmit a short message from the mobile communication terminal to the incoming mobile terminal, the SMS center and the home location register manage the incoming mobile terminal as unreachable. When the terminating mobile communication terminal is in an unreceivable state in the SMS center, when the terminating mobile communication terminal transmits a signal for requesting the destination node information for the short message to the home location register, the receiving mobile communication terminal includes the short message priority field so that the terminating mobile communication terminal transmits the mobile communication network. In case of re-communication with the mobile station, it is applied to the short message service field that enables the user to receive a short message even if the location registration is not performed. Does not perform a location registration procedure (i.e., a periodic location registration procedure or a local mobile location registration procedure) in the mobile communication network when the network is switched to a callable state (when the mobile network in the region where the location is located is stabilized) Generates the effect of receiving short messages sent It is a very useful invention.

1 is a block diagram schematically illustrating a system for improving an incoming call quality of a short message service in a mobile communication network according to an embodiment of the present invention;

2 is a block diagram schematically showing an SMS center according to an embodiment of the present invention;

3 is a flowchart illustrating a method for improving the incoming quality of a short message service in a mobile communication network according to a practical example of the present invention.

<Description of Symbols for Main Parts of Drawings>

110: outgoing mobile communication terminal 112: incoming mobile communication terminal

120: mobile network 130: SMS center

Claims (11)

A server for transmitting a short message to an incoming mobile communication terminal in conjunction with a mobile switching center and a home location register, A communication unit cooperating with the mobile communication switching center and the home location register; Control the communication unit to transmit a destination node information request signal to the home location register; and when a destination node information response signal is received from the home location register, transmit a destination side short message transfer signal to the mobile communication switching station; When receiving a short message forwarding signal from a mobile communication switching center, controlling to transmit a priority destination node information request signal including a short message priority field to the destination node information request signal to the home location register; Control unit; And A storage unit which stores the called node information request signal, the called node information response signal, the called side short message transfer signal, the called side short message transfer impossible signal, and the priority called node information request signal. Server for improving the incoming quality of the short message service using a mobile communication network comprising a. The method of claim 1, The called node information request signal, Server for improving the incoming quality of the short message service using a mobile communication network, characterized in that the SendRoutingInfoForSM signal included in the 3rd Generation Partnership Project (3GPP) 23.040 standard. The method of claim 1, The control unit, Receiving the calling short message transmission signal from the mobile communication switching center and transmitting the called node information request signal to the home location register. The method of claim 3, wherein The sender short message transmission signal, Server for improving the incoming quality of the short message service using a mobile communication network, characterized in that the 3GPP standard MO_Forward_SM signal. The method of claim 1, The control unit, The server for improving the reception quality of the short message service using the mobile communication network, characterized in that for receiving the short message transmission impossible signal to the home location register and receiving a short message transmission status report signal from the home location register. . The method of claim 1, The short message priority field is Server for improving the incoming quality of the short message service using the mobile communication network, characterized in that 3GPP 29.002 standard SM_RP_PRI. The method of claim 1, The control unit, After receiving the priority node information request signal to the home location register, receiving the destination node information response signal from the home location register, and retransmitting the called party short message transmission signal to the mobile communication switching center. Server for improving the incoming quality of the short message service using a mobile communication network. A method for transmitting a short message to an incoming mobile terminal by a short message service center (SMS) in conjunction with a mobile communication switching center and a home location register, (a) transmitting a called node information request signal to the home location register; (b) transmitting a called party's short message transfer signal to the mobile switching center when receiving a called node information response signal from the home location register; (c) receiving a signal for disabling a called party's short message from the mobile communication switching center; And (e) transmitting a priority destination node information request signal including a short message priority field to the destination node information request signal to the home location register; Method for improving the incoming quality of the short message service using a mobile communication network comprising a. The method of claim 8, Before step (a) above, (a-1) receiving an originating short message transmission signal from the mobile communication switching center Method for improving the incoming quality of the short message service using a mobile communication network characterized in that it further comprises. The method of claim 8, Step (e), (e1) transmitting a signal to not forward the called short message to the home location register; (e2) receiving a short message delivery status report signal from the home location register; And (e3) transmitting the priority destination node information request signal to the home location register; Method for improving the incoming quality of the short message service using a mobile communication network comprising a. The method of claim 8, After step (e), (f) receiving the called node information response signal from the home location register; And (g) retransmitting the called party short message transmission signal to the mobile communication switching center; Method for improving the incoming quality of the short message service using a mobile communication network characterized in that it further comprises.

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