KR20040044691A - Method for recognizing ring generation at receiver's mobile communication terminal - Google Patents

Abstract

PURPOSE: A method for recognizing whether a ringing tone is generated in a receiver mobile communication terminal is provided to enable an originator to receive the first and second different alarming messages from a self mobile communication terminal, thereby perceiving whether a ringing tone is generated in a receiver mobile communication terminal. CONSTITUTION: An MS(Mobile Station) transmits a call generation service request to a BS(S200). The BS transmits an ISDN to an MSC(S205). The MSC transmits an IAM(Initial Address Message) to a termination switch(S210), and transmits an ISDN call processing message to the BS(S215). A traffic channel assign confirmation message is transmitted to the BS(S225). The termination switch manages a subscriber state(S230). An ACM(Address Complete Message) is transmitted to the MSC(S235). The MSC transmits an ISDN standby message to the BS(S240), and transmits the first alarming message to the MS(S245). The termination switch transmits a position confirm message to the MSC(S255). If an MS of a receiver responds to a call request, the termination switch transmits a response message to the MSC(S265,S270). The MSC forms a network connection(S275,S280). The BS enables a call between users(S285).

Description

{METHOD FOR RECOGNIZING RING GENERATION AT RECEIVER'S MOBILE COMMUNICATION TERMINAL}

The present invention relates to a mobile communication system, and more particularly, to a method of recognizing whether or not a ringing tone of a receiver mobile terminal is generated in a mobile communication system that indicates whether a ringing tone is generated in a receiver terminal when a caller requests a call. .

In general, when a call is made to another mobile terminal using a mobile communication terminal, the caller's mobile terminal is first checked if the line status of the receiver's mobile terminal can be answered by checking whether the call is busy or non-calling. It generates a dial tone so that the caller can recognize it. At this time, the caller thinks that a ringing tone is heard from his mobile terminal, so that the receiver will ring the mobile terminal as well as a landline telephone.

However, even if a dial tone is heard by the caller's mobile terminal, a telephone ring, that is, a ring tone does not actually ring at the receiver's mobile terminal during the time in which the mobile communication system locates the receiver's mobile terminal. A caller who is not aware of this situation may misunderstand that the recipient does not knowingly accept the mobile terminal.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method in which a caller can recognize whether a ringing tone sounds at a receiver's mobile terminal.

According to a first aspect of the present invention, there is provided a method for recognizing whether a ring tone is generated by a receiver terminal, the method comprising: a) receiving a call from a calling party mobile terminal, checking a line state of the called mobile terminal, Generating and sending a first acknowledgment message to the switching center according to the status; b) when the first confirmation message is input to the switching center, generating and transmitting a first notification message corresponding to the confirmation message to the caller mobile terminal; c) determining the location of the called mobile terminal and sending a second acknowledgment message to the switching center if the called mobile terminal line state can receive a call from the calling mobile terminal; And d) the switching center receiving the second acknowledgment message and transmitting a second notification message corresponding to the second acknowledgment message to the caller mobile terminal.

Therefore, according to the present invention, the caller can recognize whether or not a ringing tone sounds at the receiver's mobile terminal.

1 is a block diagram of a mobile communication system according to an embodiment of the present invention.

2 is a flowchart illustrating a method of recognizing whether a ring tone is generated by a receiver terminal in a mobile communication system according to an exemplary embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

100: first mobile terminal

110: base station

120: exchange bureau

130: home location register (HLR)

140: third party network

160: second mobile terminal

170: third mobile terminal

180: visited location register (VLR)

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention.

1 is a block diagram of a mobile communication system according to an embodiment of the present invention.

Referring to Figure 1, the mobile communication system of the present invention is a mobile terminal of the first mobile terminal 100, the base station 110, the switching center 120, the home location register 130, the third party network 140, the receiver Second and third mobile terminals 160 and 170, and a visited location register 180.

The mobile terminals always register their location with the base station and store location information and status information of the mobile terminals in a home location register and a visitor location register. Therefore, wherever the third mobile terminal 160 is located in the reception area, it is configured to allow incoming calls. Therefore, not only the own network but also the second mobile terminal 160 existing in the third party network 140 may be received.

Data sent from the first mobile terminal 100 when the first mobile terminal 100 wants to make a call to the third mobile terminal 170 in the own network or the second mobile terminal 160 in the third party network. Is transmitted to the switching center 120 through the base station 110, and the switching center 120 or the third-party network 140 finds the second or third mobile terminal (160, 170) and calls from the first mobile terminal. Attempt to connect. At this time, the terminal 120 to receive the call, that is, the state of the second or third mobile terminal (160, 170) is checked, if the state can be received, the switching center 120 generates a first notification message (Ring Back Tone) Let's do it. In this case, the caller may hear the first notification message through a speaker (not shown) of the first mobile terminal 100 or an earphone connected to a predetermined connection terminal. The first notification message may include a voice message or a text message, and may be recognized by the user of the mobile terminal.

When a location confirmation message indicating that the location is confirmed by identifying the location of the second or third mobile terminal 160 or 170 is input to the switching center 120, the switching center 120 or the third party network 140 The exchange station (not shown) generates a ring tone to the second or third mobile terminal (160, 170), and at the same time, the exchange station 120 generates a second notification message in which the first notification message is discriminated. 1 is transmitted to the mobile terminal 100.

2 is a flowchart illustrating a method of recognizing whether a ring tone is generated by a receiver terminal in a mobile communication system according to an exemplary embodiment of the present invention.

The caller's mobile station (MS) transmits the call origination service request to the base station by processing a call origination request including a phone number of the receiver's mobile terminal (S200).

The base station (BS) processes a setup message of an integrated services digital network (ISDN), which is one of several external networks, and then transmits the ISDN to an exchange (S205). When the ISDN is input, the switching center transmits an initial address message (IAM) of the user part of the ISDN to a terminating switch (S210). At the same time, the switching center transmits an ISDN call processing message to the base station (S215). When the ISDN call processing message is input to the base station, the base station allocates a traffic channel to the sender's mobile terminal (S220). When the sender's mobile terminal tunes to the traffic channel, it transmits a traffic channel assignment confirmation message to the base station (S225).

On the other hand, the terminal switch performs the status of the receiver mobile terminal corresponding to the telephone number of the receiver included in the IAM (Initial Address Message) transmitted from the sender's mobile terminal, that is, the subscriber's state management (S230). An example of the state of the subscriber may be the power of the mobile terminal of the subscriber (ON) or off (OFF), whether the mobile terminal is a normal subscriber, whether the charging of the mobile terminal has been processed.

If the status of the receiver's mobile terminal is in the OFF state, a predetermined message is transmitted from the voice mailbox to the sender's mobile terminal. However, the address of the ISDN user part is completed by transmitting recently stored information to the subscriber management device, such as when the power is not turned off, for example, when the receiver's mobile terminal is moved to a reception or unavailable area, or when the power is exhausted. A message (Address Complete Message, ACM) is transmitted to the switching center (S235).

The switching center receives an address complete message (ACM) of the ISDN user part and transmits an ISDN waiting message to the base station (S240). In addition, the switching center generates a first notification message and transmits it to the sender's mobile terminal (S245).

The terminal switch checks the state of the mobile terminal of the receiver (S230), and then determines the location of the receiver mobile terminal (S250). When the home location register (HLR) and the visitor location register (VLR) confirm the location of the receiver mobile terminal, a location confirmation message is generated and transmitted to the switching center (S255).

When the location confirmation message of the receiver mobile terminal is input to the switching station, the switching center erases the first notification message and generates a second notification message and transmits it to the sender's mobile terminal (S260).

When the receiver's mobile terminal responds to the call request, the terminal switch generates a response message according to the receiver's mobile terminal response and transmits the response message to the switching center (S265 and S270). After receiving the response message, the switching center transmits an ISDN connection message to the base station, then erases the second notification message, and forms a network connection between the sender's mobile terminal and the mobile system (S275, S280).

The base station transmits an ISDN connection confirmation message to the switching center, and each user who uses the sender's mobile terminal and the receiver's mobile terminal can talk to each other (S285).

The ISDN of the present invention is one of external networks, and in another embodiment of the present invention, a public switched telephone network (PSTN), a public land mobile network (PLMN), a public switched packet data network (PSPDN), etc. may be used. Can be.

As described in detail above, according to the method of recognizing whether a ring tone is generated by the receiver mobile terminal of the present invention, the caller receives the first and second notification messages different from his mobile terminal, thereby making a ring tone to the receiver's mobile terminal. It can be known whether this has occurred. That is, when the receiver's mobile terminal moves to an unreceivable area without power off, or when the location of the receiver's mobile terminal cannot be found on its own network or a third party network, or because of a large amount of call, the receiver's mobile terminal If a traffic channel cannot be established, the caller does not transmit a second notification message to the sender's mobile terminal, so that the caller does not receive a ring tone to the receiver's mobile terminal, so that the receiver cannot receive the mobile terminal. Will be.

Embodiment of the present invention is only one embodiment, of course, many modifications and variations of the components of the present invention without departing from the gist of the present invention, of course, the present invention is not limited to the embodiment. .

Claims (1)

a) receiving a call from the calling mobile terminal to confirm the line state of the called mobile terminal, generating a first acknowledgment message according to the line state of the called mobile terminal, and transmitting it to the switching center; b) when the first confirmation message is input to the switching center, generating and transmitting a first notification message corresponding to the confirmation message to the caller mobile terminal; c) determining the location of the called mobile terminal and sending a second acknowledgment message to the switching center if the called mobile terminal line state can receive a call from the calling mobile terminal; And and d) sending, by the switching station receiving the second acknowledgment message, a second notification message corresponding to the second acknowledgment message to the caller mobile terminal.