KR20080017533A - System and method for providing short message service using ip backbone network - Google Patents

Abstract

A system and a method for providing an SMS service by using an IP backbone network are provided to process an SMS source call through a BSC, the IP backbone network, a signal gateway in a mobile communication network, thereby reducing the load of an exchanger as the SMS source call has no need to pass through a source MSC during the processing of the SMS source call and reducing cost by reducing additional investment for the MSC. A BSC(Base Station Controller)(23-1,23-2) analyzes the service option field of a source request message received from a BS(Base Station)(22-1,22-2) from a mobile communication terminal(21-1,21-2) and transmits an SMS(Short Message Service) source request message when the received source request message is the SMS source request message. An SMS center(27) converts an SMS IP(Internet Protocol) packet into an original SMS source request message, refers to a receiver's location by inquiring location information to an HLR(Home Location Register)(28) by using a receiver's number included in the SMS source request message, and transmits an SMS message with a caller's number and the receiver's number to an MSC(Mobile Switching Center)(29) in which the receive is positioned.

Description

System and Method for Providing Short Message Service Using IP Backbone Network}

1 is a diagram illustrating a text message service providing system in a conventional mobile communication network.

2 is a diagram illustrating a text message service providing system using an IP backbone network according to the present invention.

3 is a view for explaining a text message service providing procedure using an IP backbone network according to the present invention.

Explanation of symbols on the main parts of the drawings

21-1, 21-2: mobile communication terminal 22-1, 22-2: base station

23-1, 23-2: base station controller 24: gateway access node

25: IP backbone network 26: signal gateway

27: SMS Center 28: Home Location Register

29: mobile exchanger

The present invention relates to a text message service in a mobile communication network, and in particular, when an SMS call is requested, an IP address capable of handling an SMS call through a base station controller, an IP backbone network, and a signal gateway without passing through an originating mobile exchange. A system and method for providing a text message service using a backbone network are provided.

With the recent development of communication technology, mobile communication terminals such as mobile phones, Internet phones, IMT-2000, PDA phones, etc. are increasing in popularity, and these mobile communication terminals provide text message transmission functions along with general voice communication functions.

In particular, when a simple content to be delivered is not possible to use a voice call, the use of text messages is convenient, and students and younger generations are increasingly used because they can save communication fees.

In the conventional mobile communication network, a text message service providing system includes mobile communication terminals 11-1 and 11-2 equipped with software supporting text message services, and a base transceiver station, as shown in FIG. 1. Subsystem 12-1, 12-2, Base Station Subsystem 13-1, 13-2, Mobile Switching Center 14-1, 14-2, SMS The center (Short Message Service Center) 15 and the Home Location Register 16 have a configuration in which they cooperate with each other.

The text message service providing method in the conventional mobile communication network based on such a configuration is as follows.

First, in order to transmit a text message to another mobile communication terminal 11-2, an arbitrary mobile terminal user 11-1 inputs the other party's telephone number, that is, a called party number, and inputs a text message to be transmitted. When requesting a text message transmission later, the base station 12-1 transmits the text message transmitted from the mobile communication terminal 11-1 through the base station controller 13-1 together with the calling party number and the called party number. Side transfer exchange) 14-1.

Then, when the calling party mobile exchange 14-1 forwards the text message with the calling party number and the called party number to the SMS center 15, the SMS center 15 is located at the home location register 16 using the called party number. After querying the location of the called party, i.e., the called mobile terminal 11-2, by querying the information, a text message and a caller are sent to the mobile switchboard (called call mobile switching center) 14-2 where the called party 11-2 is located. The number and called party number will be passed.

At this time, the called party mobile switch 14-2 sends the text message transmitted from the SMS center 15 to the called party 11-2 through the base station controller 13-2 and the base station 12-2 together with the calling party number. By transmitting, a series of text messaging services are provided.

However, the text message service in the above-described conventional mobile communication network is processed through a 'base station-base station controller-mobile exchange' like a voice call service, so that there is a possibility that the mobile exchange may be overloaded due to various events. In addition, there is a problem that the text message service can not be provided normally when the mobile switch overload occurs.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object thereof is to process an SMS outgoing call through a base station controller, an IP backbone network, and a signal gateway in a mobile communication network, so that an SMS outgoing call is handled through an originating mobile exchange. To reduce the load on the exchange.

A feature of the present invention for solving the above object is a mobile communication terminal equipped with a software supporting a text message service, a base station performing wireless communication with the mobile communication terminal, and a mobile exchanger performing an exchange function And a home location register for storing and managing various information for individual service subscribers, and an IP backbone network for providing a packet transmission path, the text message service providing system receiving from the mobile terminal through the base station; A base station controller which forwards the SMS origination request message when the received origination request message is identified as an SMS origination request message as a result of analyzing the service option field of the origination request message; After converting the SMS IP packet into the original SMS origination request message, querying the home location register by using the called party number included in the SMS origination request message to query the home location register, and then calling the called party. An SMS center for sending a text message with the calling party number and the called party number to the exchange; The IP address of the SMS center assigned to the called party number of the called party number included in the SMS call request message transmitted from the base station controller is checked, and the text message, the caller number and the called party number included in the SMS call request message are added to the SMDPP message. A gateway access node which inserts the SMS IP packet into a destination address, sets an IP address of the SMS center assigned to the called party number as a destination address, and transmits the SMS IP packet through the IP backbone network; When the SMS IP packet is received from the gateway access node through the IP backbone network, a text message service providing system using an IP backbone network including a signal gateway for transmitting the received SMS IP packet to the SMS center is provided.

Here, the gateway access node is a DB of the IP address of the SMS center corresponding to each called station number, and searches the DB by using the called station number of the called party number included in the SMS call request message transmitted from the base station controller. Characterize the IP address of the SMS center assigned to the called party number.

When the SMS IP packet is received from the gateway access node through the IP backbone network, the signal gateway analyzes a destination address of the received SMS IP packet and delivers the SMS IP packet to the corresponding SMS center. do.

In another aspect, the present invention provides a method for transmitting an SMS call request message including a text message, a calling party number, and a called party number to be transmitted to a counterpart in a mobile communication terminal and transmitting the SMS message to a gateway access node through a base station and a base station controller; The gateway access node inserts a text message, a calling party number, and a called party number included in an SMS call request message into an SMDPP message to generate an SMS IP packet, and then forwards the SMS IP packet to an SMS center through an IP backbone network and a signal gateway. Process of doing; Converting the SMS IP packet into the original SMS origination request message in the SMS center, and inquiring the called party's location by querying the home location register for location information using the called party number included in the converted SMS origination request message; ; Implementing a method of providing a text message service using an IP backbone network comprising the step of providing a text message service to the called party through the base station controller and the base station by transmitting a text message with the calling party number and the called party number to the mobile switching station where the called party is located; have.

Here, the process of delivering the SMS origination request message to the gateway access node may include an SMS origination request message including a text message, a calling party number, and a called party number to be transmitted to the other party from the mobile communication terminal to the base station controller through the base station. Delivering; And analyzing the service option field of the origination request message in the base station controller and forwarding the SMS origination request message to the gateway access node when it is confirmed as an SMS origination request message.

The transmitting of the SMS IP packet to an SMS center may include: checking, at the gateway access node, an IP address of an SMS center assigned to a called station number of a called party number included in an SMS origination request message; Generating an SMS IP packet by inserting the text message, the calling party number, and the called party number into an SMDPP message; Setting the destination address of the SMS IP packet to an IP address of an SMS center assigned to the called party number and delivering the SMS IP packet to an SMS center corresponding to the IP address through an IP backbone network and a signal gateway; It is characterized by.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the present invention, an outgoing call (SMS outgoing call) for a text message is handled through an IP backbone network and a signal gateway so as not to go through a mobile exchange at the base station controller. Has the configuration as shown in FIG.

That is, the text message service providing system using the IP backbone network according to the present invention, as shown in Figure 2, the mobile communication terminal (21-1, 21-2) equipped with software that supports the text message service, and the base station 22-1, 22-2, base station controllers 23-1, 23-2, Gateway Access Node 24, Signal Gateway 25, SMS Center (Short Message Service Center) 27 and home location register 28 have a configuration in which they cooperate with each other.

Here, the base station controller 23-1 analyzes the service option field of the originating request message when a series of originating request messages are received from the mobile communication terminal 21-1 through the base station 22-1. If it is confirmed that the SMS outgoing request message, and if it is confirmed that the SMS outgoing request message, the SMS outgoing request message including the text message, the calling party number and the called party number to be transmitted to the other party is delivered to the gateway access node 24.

As illustrated in Table 1 below, the gateway access node 24 has a DB of the IP address of the SMS center 27 corresponding to each called party number, and additionally implements an SMSP processor for text message processing. After checking the DB using the called party number (called prefix) of the called party number included in the SMS call request message transmitted from (23-1), confirming the IP address of the SMS center 27 assigned to the called party number, After inserting the text message, the calling party number, and the called party number to be transmitted into the SMSPP (SMS Delivery Point To Point) message, SS7 Over IP processing is performed to make SMS IP packets, and the IP address of the SMS center 27 assigned to the called party number. Is set as a destination address and transmitted to the signal gateway 26 through the IP backbone network 25.

Recipient's country number IP address of the SMS center SMS center number 011-100 192.168.21.1 SMSC # 32 011-200 192.168.21.2 SMSC # 33 011-300 192.168.21.3 SMSC # 34 ... ... ...

The signal gateway 26 provides a match between the IP layer and the SS7 upper layer so that SS7 higher layer (SCCP, ISUP, etc.) messages can be transmitted through the IP backbone 25, and from the gateway access node 24, the IP backbone network. When the SMS IP packet is received through 25, the destination address of the received SMS IP packet is analyzed and the SMS IP packet is transmitted to the corresponding SMS center 27.

When the SMS IP packet is delivered from the signal gateway 26, the SMS center 27 converts the forwarded SMS IP packet into the original SMS origination request message and then uses the called party number included in the SMS origination request message. After inquiring the location of the called party by inquiring the location information from the registrar 28, a text message is sent along with the calling party number and called party number to the mobile switching center 29 where the called party 21-2 is located.

In addition, the mobile communication terminals 21-1 and 21-2, the base stations 22-1 and 22-2, the home location register 28 and the mobile exchanger 29, which are not described in the configuration of FIG. Since the same function as the text message service processing is performed, the description thereof will be omitted.

The text message service providing procedure using the IP backbone network according to the present invention based on such a configuration will be described in detail with reference to FIG. 3.

First, an arbitrary mobile communication terminal user 21-1 inputs the other party's telephone number, that is, a called party number, to transmit a text message to another mobile communication terminal 21-2, and inputs a text message to be transmitted. When requesting a text message transmission later, the mobile communication terminal 21-1 generates an SMS call request message including a text message, a calling party number, and a called party number to be transmitted, and then the base station controller 22-1 through the base station 22-1. It transfers to 2323 (step S31).

At this time, as the base station controller 23-1 receives a series of call request messages through the base station 22-1, the base station controller 23-1 analyzes the service option field of the call request message and checks whether it is an SMS call request message. For example, when the service option is confirmed as '6' indicating that the service option is an SMS call request message (SO = 6), it is recognized as an SMS call request message.

When the base station controller 23-1 analyzes the service option field of the outgoing request message received through the base station 22-1, and determines that the message is not an SMS outgoing request message, the base station controller 23-1 processes the outgoing call process corresponding thereto ( For example, voice call processing may be performed.

However, when the base station controller 23-1 analyzes the service option field of the origination request message received through the base station 22-1, and determines that it is an SMS origination request message, the corresponding SMS origination request message, that is, the counterpart The SMS call request message including the text message, the calling party number, and the called party number to be transmitted to the gateway access node 24 is transmitted to the gateway access node 24 (step S32).

Accordingly, when the gateway access node 24 receives the SMS origination request message from the base station controller 23-1, the gateway access node 24 corresponds to each called station number using the called party number of the called party number included in the SMS origination request message in the SMSP processor. The DB in which the IP address of the SMS center 27 is stored is searched, and thus the IP address of the SMS center 27 assigned to the called station number of the called party number included in the SMS call request message is checked (step S33). ).

Thereafter, the SMSP processor of the gateway access node 24 inserts a text message, a calling party number, and a called party number to be transmitted to the other party into an SMDPP message and performs an SS7 Over IP process to generate an SMS IP packet. The SMS IP packet is generated by setting the destination address of the packet to the IP address of the SMS center 27 assigned to the called party number identified above, and the SMS IP packet generated through the IP backbone network 25 is converted into a signaling gateway ( 26) to the side (step S34).

When the signal gateway 26 receives the SMS IP packet from the gateway access node 24 through the IP backbone network 25, the signal gateway 26 analyzes the destination address of the received SMS IP packet and correspondingly corresponds to the SMS center 27. The SMS IP packet is forwarded to the network (step S35).

At this time, the SMS center 27 converts the SMS IP packet transmitted from the signal gateway 26 into the original SMS origination request message, and then uses the called party number included in the converted SMS origination request message. The location information of the called party 21-2 is inquired by querying the location information (step S36), and then the calling party number and the called party are sent to the mobile switching center where the called party 21-2 is located, that is, the called party mobile switching device 29. The text message is transmitted with the number (step S37).

The called party mobile exchange 29 then sends the text message sent from the SMS center 27 together with the calling party number via the base station controller 23-2 and the base station (not shown) 22-2. By transmitting to the base station controller 23-1, the gateway access node 24, the IP backbone network 25, and the signal gateway 26, without transmitting through the calling-side mobile exchange to the SMS originating call. ) Will provide a series of text messaging services.

In addition, the embodiments according to the present invention are not limited to the above-described embodiments, and various alternatives, modifications, and changes can be made within the scope apparent to those skilled in the art.

As described above, the present invention processes the SMS outgoing call through the base station controller, the IP backbone network, and the signal gateway in the mobile communication network, thereby reducing the load of the exchange because the SMS outgoing call does not have to go through the originating mobile exchange. In addition, the additional investment of the mobile exchanger can be reduced, thereby reducing the investment cost.

Claims (6)

A mobile communication terminal equipped with a software supporting a text message service, a base station performing wireless communication with the mobile communication terminal, a mobile exchange performing an exchange function, and storing and managing various information about individual service subscribers A text message service providing system having a home location register and an IP backbone network providing a packet transmission path, A base station controller which forwards the SMS origination request message when the received origination request message is identified as an SMS origination request message as a result of analyzing a service option field of the origination request message received from the mobile communication terminal through the base station; After converting the SMS IP packet into the original SMS origination request message, querying the home location register by using the called party number included in the SMS origination request message to query the home location register, and then calling the called party. An SMS center for sending a text message with the calling party number and the called party number to the exchange; The IP address of the SMS center assigned to the called party number of the called party number included in the SMS call request message transmitted from the base station controller is checked, and the text message, the caller number and the called party number included in the SMS call request message are added to the SMDPP message. A gateway access node which inserts the SMS IP packet into a destination address, and sets the IP address of the SMS center assigned to the called party number as a destination address and transmits the SMS IP packet through the IP backbone network; And a signal gateway for transmitting the received SMS IP packet to the SMS center when an SMS IP packet is received from the gateway access node through the IP backbone network. The method of claim 1, The gateway access node is a DB of the IP address of the SMS center corresponding to each called party number, and searches for the DB by using the called party number of the called party number included in the SMS call request message transmitted from the base station controller. Text message service providing system using IP backbone network, characterized in that the IP address of the SMS center assigned to the station number. The method of claim 1, When the signaling gateway receives the SMS IP packet from the gateway access node through the IP backbone network, the signal gateway analyzes the destination address of the received SMS IP packet and delivers the SMS IP packet to the corresponding SMS center. Text message service providing system using a backbone network. Generating, by the mobile communication terminal, an SMS call request message including a text message, a calling party number, and a called party number to be transmitted to the other party and transmitting the SMS call request message to the gateway access node through the base station and the base station controller; The gateway access node inserts a text message, a calling party number, and a called party number included in an SMS call request message into an SMDPP message to generate an SMS IP packet, and then forwards the SMS IP packet to an SMS center through an IP backbone network and a signal gateway. Process of doing; Converting the SMS IP packet into the original SMS origination request message in the SMS center, and inquiring the called party's location by querying the home location register for location information using the called party number included in the converted SMS origination request message; ; Providing a text message service to the called party through the base station controller and the base station by transmitting a text message with the calling party number and the called party number to the mobile switching station where the called party is located, characterized in that it provides a text message service using the IP backbone network Way. The method of claim 4, wherein The process of delivering the SMS origination request message to the gateway access node includes generating an SMS origination request message including a text message, a calling party number, and a called party number to be transmitted from the mobile communication terminal to the base station controller through the base station. Making a step; And analyzing the service option field of the origination request message in the base station controller and forwarding the SMS origination request message to the gateway access node if it is confirmed as an SMS origination request message. How to Provide. The method of claim 4, wherein The process of delivering the SMS IP packet to an SMS center through an IP backbone network and a signaling gateway may include verifying, by the gateway access node, an IP address of an SMS center assigned to a called party number of a called party number included in an SMS origination request message. Wow; Generating an SMS IP packet by inserting the text message, the calling party number, and the called party number into an SMDPP message; Setting the destination address of the SMS IP packet to an IP address of an SMS center assigned to the called party number and delivering the SMS IP packet to an SMS center corresponding to the IP address through an IP backbone network and a signal gateway; Method for providing a text message service using an IP backbone network, characterized in that.

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