KR20010060019A - Message Transfer Method between two networks with different protocol standards using global message service center - Google Patents

Abstract

PURPOSE: A method for providing a message transceiving service between different communication networks using a common message service center is provided to automatically receive a message transceiving service even if a subscriber is present on other visiting networks. CONSTITUTION: A visiting location register(VLR) is inquired of about subscriber information on a mobile terminal upon receipt of an originating message from the mobile terminal positioned on a visiting network in the first step. The inquired subscriber information is transmitted to a common message service center according to whether a message transmission service for the subscriber is permitted in the second step. The common message service center transmits the message to a receiver by using the position information of the receiver for the message in the third step.

Description

Message Transfer Method between two networks with different protocol standards using global message service center}

The present invention relates to a message transmission / reception method between heterogeneous networks, and in particular, by using a common message center, the protocols for message transmission / reception services provided by heterogeneous networks are mutually translated and a single message center is shared. A message transmission / reception service method between heterogeneous communication networks using a common message service center that provides a message transmission / reception service without a special procedure even if it is in another visit network beyond the home network to which it is subscribed, and a program for realizing the same. A computer readable recording medium for recording thereon.

In general, wireless subscribers can make mobile phone calls with their mobile terminals, but in reality, since the wireless network cannot cover all areas, there are no coverage areas in the city as well as in the mountains or the ocean. . In addition, since the wireless communication standard protocols of each country and service provider are different from abroad, they cannot be provided with their own wireless communication service.

On the other hand, satellite communication is a service for providing voice and data communication using satellites, and in the past, since a geostationary orbit satellite located 36,000 km over the earth, voice communication was almost impossible due to voice delay. However, in recent years, mobile satellite communication using low-orbit satellites floating hundreds of kilometers above the earth has come to enjoy the advantages of satellite communication that can provide global coverage without the disadvantages of conventional voice delays.

However, such satellite communication has a problem in that a user must pay an expensive satellite fee because a call must always go through a satellite. In order to solve this problem, the dual mode service is provided when the mobile subscriber is within the coverage area of the existing wireless communication, and is provided with the wireless network, and when the subscriber is out of the wireless communication coverage or overseas, When a communication service is to be provided, it means a service having a concept of receiving a service using a satellite communication network having global coverage.

In the case of receiving the dual mode service as described above, in order for the subscriber to use the short service in any network, there must be an intermediary between the two networks. In order to use all short message services regardless of the user's location, this intermediary must have all the information on the short message service of the subscriber. Among them, there was a problem in that the short service could not be used efficiently and properly.

In addition, when the short service is to be provided in two or more networks, since the short service centers of each network must be interworked, there is a problem that the control and processing procedures become more complicated as the number of target networks increases.

The present invention has been made to solve the above problems, by using a common message center by translating the protocol for the message transmission / reception services provided by heterogeneous networks and sharing a single message center, Message sending / receiving service method between heterogeneous communication networks using a common message service center that can be provided with message sending / receiving service automatically without special procedure even if it is in other visited network away from the home network to which it is subscribed, and a program for realizing the same Its purpose is to provide a computer readable recording medium having recorded thereon. In particular, the present invention provides a mobile terminal originating in a state in which a dual mode subscriber using a wireless communication network or a satellite communication network as a home and additionally using the other network for roaming is currently connected to a visited network instead of his own home network. Alternatively, when there is a request for a short-term service of a mobile terminal, the two networks convert their protocols into protocols of each other through an interworking device and a common message center, so that a dual mode subscriber is connected to two different networks. A computer-readable record of a method of transmitting / receiving messages between heterogeneous communication networks using a common message service center and a program for realizing the same, so that a short-term service can be provided without requiring any procedure regardless of its location. The purpose is to provide a medium.

1 is a system configuration diagram for interworking between a satellite communication network and a wireless communication network using an interlocking device and a common short service center to which the present invention is applied.

2 is a flowchart illustrating a mobile outgoing short message service method when a subscriber having a wireless communication network as a home according to the present invention is registered in a satellite communication network.

3 is a flowchart illustrating an exemplary method for mobile incoming short message service when a subscriber having a wireless communication network home is registered in a satellite communication network.

4 is a flow chart of an embodiment of a mobile outgoing short message service method when a subscriber having a satellite communication network as a home is registered in a wireless communication network according to the present invention.

FIG. 5 is a flowchart illustrating an exemplary method for mobile incoming short message service when a subscriber having a satellite communication network as a home is registered in a wireless communication network.

* Explanation of symbols for the main parts of the drawings

101: interlocking device (IWF) 102: common short service center (G-SMC)

103: mobile switching center (MSC) 104: mobile communication network side location register (C-VLR)

105: Gateway Switching Center (GMSC) or Interlocking Switching Center (IWMSC)

106: Home position register (C-HLR) on the mobile communication network

107: home position register (G-HLR)

108: Satellite communication network landing location register (G-VLR)

109: Mobile Satellite Exchange Center (MSSC) [Gateway Exchange Center (GMSC) or Interlocked Exchange Center (IWMSC)]

In order to achieve the above object, the present invention provides a message transmission method between heterogeneous communication networks, which is applied to a communication system, which receives an outgoing message from a mobile terminal located in a visited network, and obtains subscriber information of the mobile terminal from the visited network side visited location register. A first step of querying (VLR); A second step of transmitting to the common message service center according to the permission of the message transmission service for the subscriber by using the inquired subscriber information; And a third step of the common message service center transmitting the message to the receiver by using the location information of the receiver for the message.

In addition, the present invention, in a message receiving method between heterogeneous communication networks applied to a communication system, receiving an incoming message from a common message service center, and inquiring the location information of the recipient to the home location register of the home network of the incoming message recipient First step; A second step of requesting routing information from the visited location register of the network in which the receiver is located according to the type of the network in which the receiver is located, as a result of the inquiry in the first step; A third step of the visited location register transmitting the routing information to the switching center of the network side where the receiver is located through the home location register of the receiver; And a fourth step in which the exchange center of the network side where the receiver is located delivers the message to the receiver using the routing information.

In addition, the present invention, in order to send a message between heterogeneous communication networks, a communication system having a processor receives an outgoing message from a mobile terminal located in the visited network, and visits the visited network side visited location register (VLR) for subscriber information on the mobile terminal. A first function to query on; A second function of transmitting to the common message service center according to the permission of the message transmission service for the subscriber by using the inquired subscriber information; And a computer readable recording medium having recorded thereon a program for the common message service center to realize a third function of transmitting the message to the recipient using location information of the recipient for the message.

The present invention, in order to receive messages between heterogeneous communication networks, receives an incoming message from a common message service center in a communication system having a processor, and transmits the location information of the recipient to a home location register of the home network of the incoming message recipient. A first function to query; A second function for requesting routing information to a visit location register of a network in which the receiver is located according to a type of the network in which the receiver is located, as a result of the inquiry of the first function; A third function of transmitting, by the visited location register, the routing information to the switching center of the network side where the receiver is located through the home location register of the receiver; And a computer-readable recording medium having recorded thereon a program for realizing a fourth function of delivering the message to the receiver by the switching center of the network side where the receiver is located using the routing information.

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

1 is a diagram illustrating a system configuration for interworking between a satellite communication network and a wireless communication network using a mutual interworking device and a common short service center to which the present invention is applied.

Satellite communication networks are constructed to allow users to make and receive calls with their number and their satellite communication terminals anywhere in the world, using several satellites and terrestrial earth stations that can cover the global area. The satellite communication network conforming to the Global System for Mobile Communications (GSM) protocol is a satellite communication network based on the GSM standard, which is a European wireless communication standard.

A wireless network that conforms to the IS-41 protocol is a wireless network based on the IS-41 standard, which is the North American wireless standard.

MSSC 109 is a switch that plays a role of receiving a signal from a satellite and delivering it through a terrestrial network. The MSSC 109 serves as a mobile switching center 103 of a wireless communication network, but receives a signal received from a satellite. There is a difference from the mobile switching center 103 in that it is processed.

GMPCS VLR (107) is a landing location register held by the satellite network, and is a routing device for mobile subscribers when they leave their home area and are registered in another area covered by the satellite. A database that temporarily stores information and subscriber information.

The wireless network side visited location register (VLR) 104 is a visited location register held by the wireless network, and when the mobile subscriber is registered in another area after leaving his home area, routing information and subscriber information for the subscriber is registered. Temporarily stored database.

The wireless communication network home location register (HLR) 106 is a home location register held by the wireless communication network, which permanently stores all subscriber information and additional service information for a mobile subscriber, and also stores a current location information of the subscriber. to be. Since all basic information about the subscriber is stored in the home location register, the subscriber information is first obtained from the home location register when the system performs any processing on the subscriber.

Interlocking device (IWF) 101 is a function that acts as an intermediary for two or more networks with different protocols to be able to roam without interruption as if it is a single network. And the like.

The interlocking device 101 is present between two heterogeneous networks, and is connected to a home location register and a visited location register, which are network components, to provide mobility management between them. From the standpoint of the home network, it plays the role of a visiting location register. The common short message center in the interlocking device acts as a short message center for both networks. Like the short message center, the common short message center is connected to the gateway switching center or interworking exchange center of both networks, and the short message is transmitted from the mobile terminal or It is delivered to the mobile terminal.

By implementing a common short message center 102 in the interworking device 101 necessary for interworking between heterogeneous networks through such a configuration, in providing a short message service between two or more networks, It is possible to provide a short message in any network through the interlocking device 101 without the need to connect all.

The dual mode subscriber may have a satellite network at home or a wireless network at home. Considering each case, it is not a problem if the subscriber who is homed on the wireless network is in the wireless network at all, and all procedures are handled within the wireless network according to the IS-41 standard, and the common short message center is wireless. Used as a network short message center. Similarly, even if the subscriber who is home to the satellite communication network is in the satellite communication network, all procedures are processed in the satellite communication network according to the GSM standard, and the common short message center is used as the satellite communication short message center.

The part where the interlocking device 101 is used is when the subscriber is in the visited network. If the subscriber having the home network is registered in the satellite network, there is no big problem of interworking in the case of mobile short message, but in the case of mobile short message service, the home location register of the wireless network is used to check the user's location. ), And then send a short message to the subscriber in the satellite network.

Similarly, if the subscriber who is home to the satellite communication network is registered in the wireless communication network, in the case of the mobile outgoing short message, the common short message center acts as the satellite communication network short message center, and there is no need for special interworking. In the case of a mobile incoming short message service, the home location register 108 of the satellite communication network is inquired to confirm the location of the user, and then the short message is delivered to the subscriber in the wireless communication network.

2 is a flowchart illustrating a mobile outgoing short message service method when a subscriber having a wireless communication network as a home according to the present invention is registered in a satellite communication network.

If the mobile terminal transmits a message transfer message to the mobile satellite exchange center for the short message together with the desired short message (201), the mobile satellite exchange center requests the mobile outgoing short message information for verification of the mobile terminal. sendInfoFor-MO-SMS) message to the visit location register (202).

When a mobile terminal registers with a satellite communication network for the first time, the mobile terminal receives authentication through the satellite's visited location register and stores its profile there. Therefore, the mobile satellite exchange center does not need to query the subscriber's home location register. Through the inquiry of the visited location register, it is possible to inquire the subscriber's short service authority. If the inquiry is successfully made on the subscriber in the visited location register, the visited location register reports success to the mobile satellite exchange center (203).

Upon receiving success, the mobile satellite exchange center forwards a forward short message to the interlocking exchange center (204), which enables the interlocked exchange center to deliver the short message to a common short message center. The center transfers the short message to the common short message center through message transfer (205).

The common short message center is implemented together in the interworking device, and can process all short messages using both protocols. Thus, the short message transmitted from the satellite communication network is stored in the common short message center according to the protocol of the satellite communication network. .

After receiving the short message and processing it successfully, the common short message center delivers a delivery report (delivery report) to the interlocking exchange center (206), and the interlocking exchange center delivers a delivery report to the mobile satellite exchange center ( 207).

Finally, if a delivery report (delivery report) is transmitted from the mobile satellite exchange center to the mobile terminal (208), the mobile terminal knows that the short message in which it originated was successfully delivered to the common short message center. In the case of the mobile outgoing short message as described above, the unnecessary short link between the two networks can be reduced by using a common short message center.

3 is a flowchart illustrating an exemplary method for mobile incoming short message service when a subscriber having a wireless communication network as a home is registered in a satellite communication network.

When the short message for the mobile terminal is received at the common short message center, the common short message center inquires the subscriber's location to the home location register of the wireless communication network through the mobile switching center of the wireless communication network, which is the home network of the mobile terminal (301). (302). In this case, since the subscriber's home network is a wireless communication network, the common short message center makes such a request to the wireless communication network mobile switching center using the IS-41 protocol. That is, the common short message center transfers a short message service request (SMSREQ) message to the mobile switching center (301), and the mobile switching center also delivers a short message service request (SMSREQ) message to the home location register (302).

The home location register, which has received the SMSREQ message, inquires of the subscriber, and transmits the subscriber's location information to the mobile switching center through the SMSREQ-ACK message (303).

The mobile switching center transmits the received message back to the common short message center through a short message service request response (SMSREQ-ACK) (304).

The common short message center receiving the location information of the subscriber can know that the subscriber is currently registered in the satellite communication network. At this time, the common short message center has a capability of directly transmitting the short message received by the user or the short message to be transmitted to the mobile satellite switching center of the satellite communication network in which the subscriber is registered. That is, the short message is directly transmitted to the mobile satellite switching center of the satellite communication network without passing through the mobile switching center of the wireless communication network, which is the subscriber's home network. To this end, the common short message center directly forwards a forward short message including a short message to the mobile satellite switching center of the satellite communication network (305).

Upon receiving the message, the mobile satellite exchange center transmits a mobile sender short information transmission request (sendInfoFor-MT-SMS) message to the visited location register to obtain information about a user registered with the user (306). The visited location register, which has received the message, examines the detailed location information and the possibility of providing the short message service to the user and transmits the report to the mobile satellite exchange center (306).

The mobile satellite exchange center transfers the short message received from the visited location register to the mobile terminal using a message transfer message, and when the mobile terminal successfully receives the short message, the mobile terminal transfers the short message to the mobile terminal. The terminal reports the successful reception of the short message to the mobile satellite exchange center (307). Upon receipt of a short message, the mobile satellite exchange center reports the completion of the short message directly to the common short message center (308).

As described above, through the use of a common short message center, it is possible to obtain the same effect that the two procedures are performed separately in the two networks without the need of direct interworking between the two networks. That is, the whole procedure is divided into the user location confirmation procedure in wireless communication network and the short message delivery procedure in satellite communication network, so that the user location confirmation in wireless communication network and short message delivery in satellite communication network are performed in the common short message center without the complex interworking between networks. In this way, the short message interworking can be achieved in the same manner as performing two independent procedures for the two networks.

4 is a flow chart of an embodiment of a mobile outgoing short message service method when a subscriber having a satellite communication network as a home is registered in a wireless communication network according to the present invention.

The mobile terminal intending to deliver the short message in the wireless communication network transmits the short message to the base station according to the protocol of the wireless communication network (401).

The base station receiving the short message transmits a point-to-point short message (SMDPP) message, which is a message including the short message, to the mobile switching center (402), and the mobile switching center again delivers the message to the interworking switching center (403). The interworking exchange center transfers a point-to-point short message delivery (SMDPP) message to the common short message center, so that the short message sent by the mobile terminal can be stored in the common short message center (404).

If the short message is successfully received, the common short message center forwards a point-to-point short message response (SMDPP_ACK) message to the interworking exchange center (405), which is then forwarded through the mobile switching center and the base station to the mobile terminal. 406 to 408, the mobile terminal receiving the point-to-point short message transmission response (SMDPP_ACK) message from the base station knows that the short message sent by the mobile station is successfully stored in the common short message center.

In the above process, the subscriber's home network is a satellite communication network, but is currently registered in a wireless communication network, and the common short message center supports both IS-41 and GSM protocols to store or transmit a short message. The short messages can all be stored in the common short message center via the wireless network components according to the wireless network protocol. In other words, users can be provided with short-term services conveniently regardless of the location without complicated interworking between networks, and network operators can also provide short-term services to subscribers without requiring any additional conversion through the common short message center. have.

FIG. 5 is a flowchart illustrating a method for mobile incoming short message service when a subscriber having a satellite communication network as a home is registered in a wireless communication network according to the present invention.

In the case of the mobile short message service, unlike the mobile short message service, the home location register of the user must be inquired in order to check the location of the user first and deliver the short message to the area where the user is registered.

When a short message about a dual mode subscriber is received at the common short message center, the common short message center first inquires about the location of the subscriber to the home location register of the subscriber through the mobile satellite exchange center, that is, the home location register of the satellite communication network. To this end, the common short message center transmits a short message to be delivered to the subscriber through a message transfer message to the mobile satellite exchange center (501).

Upon receiving the short message, the mobile satellite exchange center transmits a short routing information request (sendRouting InfoForShortMsg) message to the home location register to inquire the subscriber's location (502). The home location register receiving the message extracts the location information of the subscriber stored therein. The home location register, which extracts where the subscriber is registered from its database, knows that the subscriber is registered in the wireless network in this case, and is allocated by the visiting location register of the wireless network to finally send a short message to the subscriber. A short routing information request (sendRoutingInfoForShortMsg) message is forwarded back to the visit location register to obtain the routing number (503).

However, since the home location register is in the satellite communication network and the visiting location register is in the wireless communication network, the signal must be passed through the interlocking device for signal transmission between the two components. In the present invention, since the interworking device and the common short message center are implemented together, the sendRouting InfoForShortMsg, which is a GSM protocol transmitted from the home location register, is a short service request (SMSREQ) that is an IS-41 message through the interworking device. Is converted to the visited location register of the wireless communication network (504).

The visited location register, which has received the short message service request (SMSREQ), forwards this message to the base station (505), and the base station transmits the final routing number for the corresponding mobile terminal in its area to the short location service request response (SMSREQ). ACK).

The visited location register transmits the received number to the home location register through the short message service request response (SMSREQ-ACK), where the short message service request response (SMSREQ-ACK), which is also an IS-41 message, is transmitted through the interworking device. The message is converted into a response to a short routing information request (Send Routing InfoForShortMsg) message and finally delivered to a mobile satellite switching center that has requested a search for subscriber location information (507).

The mobile satellite exchange center receiving the subscriber's location information includes the short message received from the common short message center in a forward short message and delivers it to the corresponding mobile switching center (508). In this case, since the mobile switching center where the subscriber is located exists in the wireless communication network, it cannot directly transmit this message, and goes through an interlocking device. That is, when a mobile satellite exchange transfers a GSM message, a forward short message, to the interworking device, the interworking device converts the message into an IS-41 message, a point-to-point short delivery (SMDPP) message, The mobile switching center delivers the received message to the mobile station through the base station.

After successfully receiving the short message, the mobile station transmits the reception success of the terminal to the base station through a point-to-point short message transfer response (SMDPP_ACK) message, and the base station delivers the message to the mobile switching center. The mobile switching center transmits a point-to-point short forwarding response (SMDPP_ACK) message to the interworking device (511), and the interworking device converts the message into a response to the GSM short message (forwardShortMessage) and finally the mobile satellite exchange. It is forwarded to the center (512). The mobile satellite exchange center does not need to convey whether the received short message is received to the common short message center. The interworking device is implemented as a common short message center, and the interworking device has already received the short message from the mobile switching center. Because they have been reported to be successful, they can deliver this information from the interlocking device to the common short message center.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

The present invention as described above, using a heterogeneous network and interworking device and a common message center operating between the satellite communication network and a wireless communication network, mutually translating the protocol for the message transmission / reception service provided by the two networks, By sharing message centers, the protocol provides the interworking of message transmission / reception services between different satellite and wireless networks, so that subscribers can send messages automatically without special procedures even if they are away from the home network to which they are subscribed. / Receive service can be provided.

In addition, network operators have the effect of providing efficient message transmission / reception services to their subscribers by sharing a common message center without the need for complex interworking.

Claims (6)

In the message transmission method between heterogeneous communication networks applied to a communication system, A first step of receiving an outgoing message from a mobile terminal located in the visited network, and inquiring subscriber information of the mobile terminal to a visited network-side visited location register (VLR); A second step of transmitting to the common message service center according to the permission of the message transmission service for the subscriber by using the inquired subscriber information; And A third step of the common message service center transmitting the message to the receiver by using the receiver's location information on the message; Message transmission method between heterogeneous communication networks comprising a. The method of claim 1, The second step, A fourth step of confirming whether to allow a message transmission service for the subscriber by using the inquired subscriber information; A fifth step of transmitting to the common message service center by using the inquired subscriber information when the message transmission service is permitted as a result of the checking in the fourth step; And A sixth step of terminating the message transmission procedure if the message transmission service is not permitted as a result of the checking of the fourth step; Message transmission method between heterogeneous communication networks comprising a. In the message receiving method between heterogeneous communication networks applied to a communication system, A first step of receiving an incoming message from a common message service center and inquiring of the location information of the recipient to a home location register of a home network of the incoming message recipient; A second step of requesting routing information from the visited location register of the network in which the receiver is located according to the type of the network in which the receiver is located, as a result of the inquiry in the first step; A third step of the visited location register transmitting the routing information to the switching center of the network side where the receiver is located through the home location register of the receiver; And A fourth step in which the exchange center of the network side where the receiver is located delivers the message to the receiver using the routing information; Message receiving method between heterogeneous communication networks comprising a. The method of claim 3, wherein The second step, A fifth step of requesting routing information to a visit location register of a home network where the receiver is located if the receiver is located in a home network as a result of the inquiry in the first step; And A sixth step of requesting routing information to the visit location register of the visited network where the receiver is located, if the receiver is located in the visited network as a result of the inquiry in the first step; Message receiving method between heterogeneous communication networks comprising a. In a communication system having a processor for sending messages between heterogeneous communication networks, A first function of receiving an outgoing message from a mobile terminal located in a visited network and inquiring subscriber information of the mobile terminal to a visited network-side visited location register (VLR); A second function of transmitting to the common message service center according to the permission of the message transmission service for the subscriber by using the inquired subscriber information; And A third function of the common message service center sending the message to the recipient using location information of the recipient for the message A computer-readable recording medium having recorded thereon a program for realizing this. In a communication system having a processor for receiving messages between heterogeneous communication networks, A first function of receiving an incoming message from a common message service center and inquiring of the location information of the recipient to a home location register of a home network of the incoming message recipient; A second function for requesting routing information to a visit location register of a network in which the receiver is located according to a type of the network in which the receiver is located, as a result of the inquiry of the first function; A third function of transmitting, by the visited location register, the routing information to the switching center of the network side where the receiver is located through the home location register of the receiver; And A fourth function of the exchange center of the network side where the receiver is located delivers the message to the receiver using the routing information; A computer-readable recording medium having recorded thereon a program for realizing this.