KR100442127B1 - Inter-network Gearing Short Message Service Method - Google Patents

Abstract

The present invention allows a short message service between a 2G network and a 3G network to be interworked in a communication network in which a synchronous 2G mobile communication network (2G network) and an asynchronous 3G mobile communication network (3G network) are mixed. The present invention relates to a interworking short message service method for interworking with a network, so that a subscriber who has a message pending in a network moves to a 3G network. The 3G recognizes a system connection from the subscriber station 60. At the exchange (62), a first step (S601, S602) of requesting a corresponding home location register (HLR) 63 to update a location registration for the terminal; A second step (S603) of instructing the 2G switch 61 to which the terminal 60 has previously belonged to cancel the previous registration in the HLR; In step S604, in response to the deregistration command, the 2G exchanger 61 releases the message pending flag previously set based on the command, and includes the pending flag in the response message (S604). ); A fourth step (S605) of setting, at the HLR (63), a pending flag based on the received response message and forwarding a completion response message for the location registration update request to the 3G exchanger (62); A fifth step of instructing the home short message service center (SMSC) 64 of the location-registered terminal to perform an incoming call processing for the short message and releasing the set fanning flag (HLR 63); S606); In the SMSC 64, it comprises a sixth step (S607) for responding to the command and then performing an incoming procedure according to the provisions of the 3G mobile communication network.

Description

Inter-network Gearing Short Message Service Method

The present invention relates to a network-linked short message service method, and more particularly, to an existing second generation mobile communication network (hereinafter, abbreviated as 2G network) and voice / data / as a voice communication-oriented and synchronous code division multiple access (CDMA) network. Interworking short message service between 2G and 3G networks in a communication network in which 3G mobile communication networks (hereinafter abbreviated as 3G networks) as video asynchronous and asynchronous Universal Mobile Telecommunications Service (UMTS) networks are mixed. In particular, the present invention relates to an interworking short message service method for interworking networks so that a subscriber who has a message pending in a 2G network can successfully receive a message when moving to a 3G network.

The short message service (SMS) method in 2G and 3G networks respectively defined in the current specification will be described as follows.

First, an SMS service method in a synchronous 2G network will be described.

FIG. 1 is a flow chart of a case of sending an SMS in a 2G network, and when there is an SMS call from a subscriber station (MS-A) 10 of a 2G network according to an existing procedure, the short message is sent. Is transmitted to the 2G exchanger (2G MSC) 11 via the corresponding base station / controller (not shown) (S101), and the 2G exchanger 11 transmits the short message to the home SMS center of the called party (SMSC-B). (S102) using the SMS Delivery Point to Point (SMDPP) message (S102), and correspondingly, the home SMS center 14 transmits a response message to the 2G switch 11 ( S103), the 2G switch 11 responds to the originating subscriber station 10 (S104).

In step S102, the 2G exchanger 11 checks the prefix of the called number included in the short message and transmits the short message to the home SMS center 14 of the called subscriber. As shown in [Table 1]

Subscriber_transmission data (SMS_BearerData), a dialed number (i.e., destination number) (SMS_Destination Address) as a destination address, and an identification number (MIN) (SMS_Original Originating Address) of the calling subscriber terminal as a source address.

TABLE 1

SMS_BearerData Subscriber Bearer Data SMS_Destination Address Dialed number SMS_OriginalOriginatingAddress MIN of calling subscriber

As described above, when the subscriber A 10 transmits a short message to the subscriber B in the existing 2G network, the recipient SMS B's home SMS center 14 performs the incoming call processing for the SMS.

The home SMS center 14 obtains the location information of the called party, namely subscriber B, from the home location register (HLR) and transmits a short message to subscriber B through the corresponding exchange / controller / base station, wherein the subscriber B's terminal If the short message is in the unreceivable state, the corresponding exchange sets the Pending flag to '1', and when the state becomes available, it notifies the home SMS center 14 (SMS Notification), and Upon receiving a response from the home SMS center 14 to the notification, the pending flag is reset to '0', and then a short message is sent to the corresponding exchange so that the subscriber B's terminal is called. On the other hand, when the subscriber B's terminal is in the power off state during the incoming process, the corresponding exchange transmits a pending flag to the home location register and resets itself.

As described above, the short message transmitted from the 2G network will be described in more detail with reference to FIGS. 2 and 3.

FIG. 2 is a flowchart illustrating a panning procedure at an exchange when a call is received in a 2G network in a continuation of the process of FIG. 1, wherein the home SMS center 14 of the called subscriber B sends the received SMDPP message to the corresponding 2G of the called subscriber B. FIG. In step S201, the 2G exchanger 22 transmits a short message delivery request (SMD_REQ) message and a response (SMD_ACK) message to the terminal MS- of the called party B. If the B) 23 recognizes that the incoming call is not available, the fan flag is set to '1' (S202 and S203), and the SMS center 14 is informed about this (S204).

FIG. 3 is a flowchart illustrating a process of a fan in a home location register subsequent to the process of FIG. 2, wherein the 2G exchanger 22 in which the panning flag is set by the process of FIG. 2 is turned off by the terminal 23. If it is recognized that the home location register 21 is notified (S301), accordingly, the home location register 21 sets its own pending flag to '1' and responds to the 2G switch 22 Then, the 2G switch 22 releases the set fan flag to '0' based on the response (S302).

FIG. 4 is a flowchart illustrating a procedure in the case where the called terminal 23 of the 2G network is in a callable state, which is continuous to the process of FIG. 2, wherein the 2G switch 22 in which the pending flag is set by the process of FIG. 2. When the terminal 23 recognizes that the terminal 23 can receive a call through system access (S401), it notifies the home SMS center 14 of this (SMS Notification) (S402), and the home SMS center ( When receiving a response to the notification (SMS Notification Ack) from 14), the set flag is released and the SMDPP message is received and the short message is received (S404).

Next, an SMS service method in an asynchronous 3G network will be described.

FIG. 5 is a flow chart of a case of sending an SMS in a 3G network, and when a subscriber A (MS-A) 50 of a 3G network sends an SMS according to the existing procedure, the short message is sent. Is transmitted to the Serving GPRS Support Node (SGSN) 51 as a 3G exchanger (3G MSC) 51 or a packet support exchange via a corresponding base station / controller (not shown) (S501).

When the SGSN 51 is delivered to the SGSN 51 in step S501, the SGSN 51 transmits the short message based on the address information (SC address) of the sender's home SMS center included in the short message. The SMSN 51 transmits to the SMS center (SMSC-A) 53 (MAP_MO_FORWARD_SHORT_MESSAGE) (S503), and if the home SMS center 53 responds (MAP_MO_FORWARD_SHORT_MESSAGE_ACK) (S504), the SGSN 51 is connected to the subscriber A terminal (SM). 50) and responds to the sent short message (Short Message Ack) (S505).

On the other hand, if the short message sent in step S501 is delivered to the 3G switch 51, the 3G switch 51 communicates with the corresponding 3G visitor location register (3G VLR) 52 of the calling subscriber. A process (S502) of acquiring a mobile subscriber ISDN (MSISDN) is further performed between the step S501 and the step S503.

In step S503, the 3G exchanger / SGSN 51 transmits the short message to the home subscriber's home SMS center 53 based on the SC address of the sender's home SMS center included in the message. The parameter transmitted at this time includes the address (SC address) of the caller's home SMS center, the MSISDN of the calling subscriber, a Transfer Protocol Data Unit (TPDU), and temporary (IMSI) information as shown in Table 2 below. .

TABLE 2

SM RP DA SC Address SM RP OA MSISDN of the calling subscriber SM RP UI Transfer Protocol Data Unit (TPDU) IMSI Include if Mobile Number Portability is supported

As described above, in the existing 3G network, when the subscriber A 50 transmits a short message to the subscriber B, the originating subscriber A's home SMS center 53 performs the incoming call processing for the SMS.

In addition, in the existing 3G network, processing for message waiting for a called subscriber (not being able to receive a message in 2G, that is, a situation corresponding to ping) is handled only by the home location register (HLR), and the message of the called terminal is processed. The HLR, which recognizes this when the standby state is released, alerts the SC address of the caller's home SMS center, which stores the short message, to perform the incoming procedure.

As described above, the existing SMS processing method in the 2G network is a receiver-based processing process, and the existing SMS processing method in the 3G network is a caller-based processing, so that both SMS processing procedures are essentially In particular, it can be seen that the method of handling a pending flag when a message is pending in a 2G network and a message waiting method in a 3G network corresponding thereto are completely different.

Due to the difference between the above-mentioned manganese SMS service, the current situation is that the interworking of the SMS service is not possible in the communication situation in which 2G and 3G networks are mixed. Therefore, a study on a method for perfect interworking of the SMS service between manganese is urgently needed. It is a required situation.

The present invention has been made in accordance with the above technical background, and its purpose is to successfully receive a message in a 3G network when a subscriber that is message pending in a 2G network as a synchronous CDMA network moves to a 3G network as an asynchronous UMTS network. It is to provide a manganese interworking short message service method that allows.

1 is a conventional flow diagram of a short message transmission in a synchronous 2nd generation (2G) network;

FIG. 2 is a conventional flowchart illustrating a panning procedure in an exchange when an incoming call is received in a second generation network following the process of FIG. 1.

FIG. 3 is a conventional flowchart illustrating a panning procedure in a home location register subsequent to the process of FIG. 2;

4 is a flowchart illustrating an existing procedure when a terminating terminal of a second generation network is in a callable state consecutively to the process of FIG.

FIG. 5 is a flow diagram of a short message transmission in an asynchronous 3G network.

6 is a flowchart illustrating a method for interworking short message service between networks according to an embodiment of the present invention, and particularly, a method for successful message reception in a third generation network when a message-pended subscriber moves to a third generation network. Is a flow chart that explains

FIG. 7 is a flowchart illustrating an incoming procedure in a third generation network continuously following the process of FIG. 6.

※ Explanation of code for main part of drawing

60: called terminal 61: switchboard of the second generation network

62: 3G network switch 63: home location register

64: Short message service center 71: Visitor location register of the third generation network

In order to achieve the above object, the inter-working short message service method according to the present invention is a third-generation mobile communication network in which a subscriber station has a short message pending in a second generation mobile communication network (ie, 2G network) to a synchronous CDMA network. (I.e., a 3G network) and a short message service method when accessing a system of a third generation mobile communication network, wherein the third generation exchange recognizes a system connection from the terminal, the location of the terminal in the corresponding home location register. A first step of requesting registration renewal; In the home location register, instructing the second generation switch to which the terminal previously belongs to cancel the previous registration; In the second generation exchange, responsive to the deregistration command and releasing the previously set message pending flag based on the command, and transmitting the pending message including the pending flag in the response message; A fourth step of setting, at the home location register, a pending flag based on the received response message, and delivering a completion response message for the location registration update request to the third generation exchange; A fifth step of, in the home location register, instructing a home short message service center of the location-registered terminal to perform an incoming call processing for the short message and releasing the set pending flag; And a sixth step in the home short message service center, in response to the command and then performing an incoming procedure in accordance with the provisions of the third generation mobile communication network.

The third generation network-based message instructing the home location register of the fifth step to perform an incoming process for the short message is a short message ready message from a switch in an existing procedure of the third generation mobile communication network. It is the same as the message type triggered by SM).

Hereinafter, a manganese interworking short message service method according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. In all the following descriptions, a terminal is a dual mode terminal that accommodates both 2G and 3G. The configuration of the home location register and the short message service center is based on the premise that it operates in a dual stack mode in which both 2G and 3G short message service programs are interoperable except for a specific case.

6 is a flowchart of a method for interworking short message service between networks according to an embodiment of the present invention, and particularly, a method for successful message reception in a 3G network when a message pending subscriber is moved to a 3G network. It is a flowchart explaining.

First, a short message is pending in a 2G network, and a subscriber terminal (MS-B) 60 having a pending flag set in a corresponding 2G exchanger (Old 2G MSC) 61 moves to the 3G network and moves to a system of the 3G network. When access is attempted, the access signal is connected to a corresponding 3G switch (New 3G MSC) 62 via a radio access network of the 3G network (S601).

The 3G exchanger 62 transmits a message (hereinafter referred to as MAP_UPDATE_LOCATION) requesting a location registration update for the connected terminal 60 to the corresponding home location register (HLR) 63 (S602). Based on the MAP_UPDATE_LOCATION message, the location register 63 determines where the terminal 60 belonged immediately before, and registers a deregistration command message (hereinafter referred to as REGCANC) to the 2G exchanger 61 which was immediately involved. Transfer (S603).

The 2G exchanger 61 deletes the registration information for the terminal 60 based on the REGCANC message and includes a pending flag in a response message (hereinafter referred to as regcanc_ack) indicating that the terminal has been deleted. In response to delivery to the register 63, the answering flag is released (S604).

The home location register (63) updates and registers the location information of the terminal (60) based on the regcanc_ack message, sets the pending flag of the short message for the terminal (60), and the 3G switch (62). In response to the MAP_UPDATE_LOCATION message, a response message (MAP_UPDATE_LOCATION_ACK) is transmitted (S605).

Subsequently, the home location register 63 releases the pending flag and correspondingly, the home short message service center (ie, the incoming call-based home short message service center) of the corresponding location-registered terminal 60 (SMSC_B). In S64, a message (hereinafter referred to as MAP_ALERT_SERVICE_CENTER) instructing to perform an incoming call processing on the short message is transmitted (S606). The MAP_ALERT_SERVICE_CENTER message is incoming information of a short message, the MSISDN parameter for the message alert stored in the message waiting data (MWD) of the home location register 63 and the address information of the short message service center (SC). Address).

In particular, the MAP_ALERT_SERVICE_CENTER message is a 3G network-based message. In the existing procedure of the 3G network, the MAP_ALERT_SERVICE_CENTER message is performed as the address information (SC address) of the short message service center stored in the MWD of the HLR in the existing procedure of the 3G network. It can be seen that it is different from the existing procedure in 3G network.

The home short message service center 64 transmits a response message (hereinafter MAP_ALERT_SERVICE_CENTER_ACK notation) for the MAP_ALERT_SERVICE_CENTER message to the home location register 63 (S607), and then the existing incoming procedure according to the standard of the 3G network. Follow the same process as

FIG. 7 is a flowchart illustrating an incoming procedure in a 3G network that is continuously performed in the process of FIG. 6, and is the same as an existing incoming procedure according to the current 3G network standard, that is, the 3 Generation Partnership Project (3GPP) standard. It is revealed.

First, after performing step S607 in FIG. 6, the home short message service center 64 receives a terminal to be delivered to the terminal 60 based on the MSISDN information provided from the home location register 63. After forwarding a short short message (MAP_MT_FORWARD_SHORT_MESSA: hereinafter referred to as MTForwardSM) to the 3G exchanger (or, in the case of a message originating from a 3G network, it may be an SGSN) 62 based on the corresponding exchange information provided. It transmits (S701).

The 3G exchanger 62 transmits a transmission information message (hereinafter referred to as MAP_SEND_INFO_FOR_MT_SM) for a terminal incoming short message to the corresponding 3G visitor location register (3G VLR) 71 based on the MTForwardSM message (S702). If a response message (hereinafter referred to as MAP_SEND_INFO_FOR_MT_SMS_AC) is received from the 3G visitor location register 71 (hereinafter referred to as MAP_SEND_INFO_FOR_MT_SMS_AC) from the 3G visitor location register 71 (S704), the short message received from the home short message server center 64 is received. A short message is forwarded to the corresponding terminal 60 (S705).

When the 3G exchanger 62 receives the short response message (Short Message Ack) for the short message from the terminal 60 (S706), the 3G exchanger 62 transmits the short message to the home short message service center 64 based on the MTForwardSM. The response message (MAP_MT_FORWARD_SHORT_MESSAGE_ACK: hereinafter referred to as MTForwardSM_ACK) is transmitted (S707).

The home short message service center 64 transmits a status report message (MAP_REPORT_SM_DELIVERY_STATU) on the success or failure of transmission of the short message corresponding to the MTForwardSM_ACK message to the home location register (63) (S708). The location register 63 sends a response message (MAP_REPORT_SM_DELIVERY_STATUS_ACK) to the home short message service center 64 to respond (S709). When the short message delivery fails, the result is notified to the home location register. Also, if the message waiting indicator (MWI) information exists in the home location register and the message is transmitted successfully, the result is updated so that the MWI is updated. It is for the mutual MWI information to be matched between the message service center (SMSC) and the home location register (HLR).

As described in detail above, according to the interworking short message service method according to the present invention, when a subscriber pending a message pending in a 2G network moves to a 3G network, an effect of successfully receiving a message in the 3G network is created. .

Claims (5)

In the second generation mobile communication network as a synchronous code division multiple access (CDMA) network, a subscriber terminal that is short-sending a short message is moved to the third generation mobile communication network as an asynchronous universal mobile communication service (UMTS) network, and is transferred to the system of the third generation mobile communication network. In the inter-working short message service method when connecting, A first step of requesting a location registration update for the subscriber station from the switch of the third generation mobile communication network recognizing the system connection of the subscriber station; In the home location register, instructing the subscriber station to cancel the location registration to the switchboard of the second generation mobile communication network where the location was previously registered; In the switch of the second generation mobile communication network, a response message for the cancellation command of the location registration is sent to the home location register, and the message pending flag previously set is released based on the cancellation command of the location registration. Transmitting the message including the message pending flag in the response message; Transmitting, by the home location register, a completion response message for the update request of the location registration to the exchange of the third generation mobile communication network based on the received response message based on the second generation mobile communication network; A fifth step of transmitting, at the home location register, a third generation mobile communication network based incoming processing message instructing the home short message service center of the subscriber station to perform incoming processing on the short message; And And a sixth step in the home short message service center, in response to the incoming processing message and subsequently performing an incoming procedure according to the standard of the third generation mobile communication network. The method of claim 1, The interworking short message service method of claim 5, wherein the incoming processing message of the fifth step includes incoming information of the short message. The method of claim 2, The incoming information includes an MSISDN for a message alert stored in the message waiting data MWD of the home location register. The method of claim 1, The standard of the third generation mobile communication network is a 3G Partnership Project (3GPP) standard, characterized in that the inter-working short message service method. The method of claim 1, In the fourth step, the home location register sets the new message pending flag based on the response message based on the second generation mobile communication network received from the exchange of the second generation mobile communication network, In the fifth step, the home location register is a manganese interworking short message service method, characterized in that for releasing the predetermined message pending flag corresponding to the message pending flag.