JP2002320261A - Mobile telephone system and mobile telephone set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a communication service with high convenience, which is applicable to the case that a mobile telephone set cannot receive a call, by notifying a receiving terminal which transits to a standby state of an incoming call from a transmitting terminal, and notifying the transmitting terminal that the receiving terminal can be communicable. SOLUTION: In the case that a mobile telephone 2 cannot receive the call from a mobile telephone 1, a TCNC 17 registers the information about calling/ receiving between the telephones 1 and 2 in its own center on the basis of a call request from the telephone 1 and the terminal registration information stored in HLR 14, generates a short message for a called party which indicates the presence of an incoming call from the telephone 1 and a short message for a calling party which indicates standby state transition of the telephone 2, and transmits the short messages to the telephones 2 and 1 via an SMSC 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a portable telephone system and a portable terminal device.

[0002]

2. Description of the Related Art Recently, with the rapid progress of mobile communication networks, various services have been provided to mobile phone users. For example, the receiving terminal is busy, out of service, or the power is off.
Additional services applied to the case where incoming calls cannot be received, such as FF, include an answering machine service and a CCBS service.

[0003] The answering machine service refers to the time when the answering machine service subscriber cannot talk (out of service area, during call, power off).
At times), an answering machine is a service that instead takes care of messages from callers.

[0004] CCBS (Completion of Calls to Busy)
Subscriber (Service) service is one of the second generation mobile communication systems, GSM (Global System for Mobile commu
nications), which is a service that, when a receiving terminal that has been in a call makes a transition to a standby state, prompts the calling terminal to retransmit to the receiving terminal (Recall).

[0005]

However, in the conventional answering machine service, when the caller wants to talk directly with the callee, the caller repeatedly sends the call to the callee terminal until the callee terminal is in a standby state. A calling operation had to be performed. Also, due to repeated calling operations by the calling terminal,
A heavy burden has been placed on the mobile communication network. In addition, the conventional CCBS service is applied only when the receiving terminal is busy, and does not correspond to the case where the receiving terminal is out of service area or in a power-off state. I couldn't say.

SUMMARY OF THE INVENTION An object of the present invention is to provide a communication service applied when a mobile phone cannot receive an incoming call. An object of the present invention is to provide a highly convenient communication service by notifying that a call can be made with a receiving terminal.

[0007]

The present invention has the following features in order to solve such a problem. In the description of the following means, a configuration corresponding to the embodiment is exemplified by parentheses. Reference numerals and the like are reference numerals and the like in the drawings described later.

An outgoing mobile terminal (for example, the mobile phone 1 in FIG. 1) transmits a call to an incoming mobile terminal (for example, FIG. 1) by an exchange device (for example, the SMSC 16 and TCNC 17 in FIG. 1) provided in the mobile communication network. In a mobile phone system (for example, the mobile phone system 100 in FIG. 1) for communication connection with the mobile phone 2), the exchange device is in a state in which the incoming mobile terminal cannot receive a call from the outgoing mobile terminal. In this case, based on the call setting request from the calling mobile terminal and the terminal registration information (for example, HLR 14 in FIG. 1) stored in advance in the mobile communication network, the transmission and reception between the calling mobile terminal and the receiving mobile terminal are performed. Registration means (for example, TCNC 17 in FIG. 1) for registering information on the own device,
A receiving-side message (for example, a receiving-side short message in FIG. 6A) indicating the presence of an incoming call from the calling mobile terminal based on the outgoing / receiving information registered in the registration unit; The message generating means (for example, TCNC 17 in FIG. 1) for generating a message for the transmitting side (for example, the short message for the transmitting side in FIG. 6B) indicating the transition to the standby state, and the message generating means Transmitting means (for example, the SMSC 16 and the TCNC 17 in FIG. 1) for transmitting the called message to the called portable terminal and the calling message to the calling portable terminal at a predetermined timing, respectively. And

It is preferable that the transmitting means transmits a message for the calling party to the portable terminal for sending when the receipt of the message for the called party by the receiving portable terminal is confirmed.

[0010] Further, when the receiving portable terminal cannot receive the message for the receiving side transmitted by the transmitting means, the transmitting means transmits the message for the receiving side again after a predetermined time has elapsed. Is preferred.

[0011] Further, it is preferable that the number of retransmissions of the receiving side message to the receiving portable terminal does not exceed a predetermined number.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings. First, the configuration will be described.

FIG. 1 is a diagram showing an overall configuration of a mobile phone system 100 to which the present invention is applied. As shown in FIG. 1, a mobile phone system 100 includes mobile phones 1 and 2 and a network 10, and the network 10 includes base stations 11 and 12, a base station controller 13, an HLR 14, and a mobile switching system 1.
5, SMSC16 and TCNC17.

The mobile phone 1 and the mobile phone 2 are interconnected via a network 10, and the base stations 11 and 12 in the network 10 are wirelessly connected to the mobile phones 1 and 2, respectively. 13. Mobile switching system 15
Is connected to the base station controller 13 and the HLR
14, SMSC16, connected to TCNC17, SMS
C16 and TCNC17 are mutually connected.

[0015] Both the mobile phone 1 and the mobile phone 2 are registered in the call arrival notification service, and the service is activated. Note that, in the present embodiment, the mobile phone 1 is a calling terminal that transmits to the mobile phone 2, and the mobile phone 2 is a receiving terminal.

Base stations 11 and 12 are controlled by base station controller 13
According to the above control, the communication protocol for the mobile phone is executed between the mobile phone 1 and the mobile phone 2 existing within a communicable range from the installation location.

An HLR (Home Location Register) 14 stores user registration information of all mobile communication subscribers. The registration information includes a subscriber number (subscriber identifier), a location registration number, the availability of various additional services, and the like.

The mobile switching system 15 controls the entire call processing of the mobile communication subscriber. Further, the mobile switching system 15 executes various processes related to the incoming call notification service based on the state of the calling terminal (mobile phone 1) and the receiving terminal (mobile phone 2), and the input signal received from the SMSC 16 ( 2 to 4).

For example, when the receiving terminal is in a call-disabled state, the mobile switching system 15 notifies the calling terminal of the activation of the reception-possible notification service, and requests the TCNC 17 to register information of the service information that can be received. . Further, upon receiving a short message notification signal from the SMSC 16 to transmit a short message for the receiving side to the receiving terminal, the mobile switching system 15 sets a wireless link with the receiving terminal and establishes a connection for the short message. Make settings.

[0020] SMSC (Short Message Service Center)
(r: short message service center) 16 executes various processes related to an incoming call notification service based on an input signal received from the mobile switching system 15 or the TCNC 17 (see FIGS. 4 to 7).

For example, when the SMSC 16 receives a message request signal from the TCNC 17 requesting transmission of a short message for the receiving side (or for the transmitting side) to the receiving terminal (or the transmitting side), the SMSC 16 transmits the short message protocol to the short message protocol. A message is constructed, and a short message notification signal to request transmission of the short message is transmitted to the mobile switching system 15.

Further, the SMSC 16 has a retransmission function of a short message in order to detect the timing at which the receiving terminal shifts to the standby state. As a parameter relating to the retransmission function, the SMSC 16 retransmits the short message for the receiving side transmitted to the receiving terminal. Transmission interval (time interval), retransmission duration,
And the maximum number of retransmissions (see FIG. 7). If the retransmission of the message is repeated at short time intervals, a heavy load is imposed on the network 10 due to the traffic capacity. Therefore, the retransmission interval is set in consideration of these. For example, if the retransmission interval is 60 minutes and the retransmission duration is 1
In the case of 0 hours, the maximum number of retransmissions is 10 times.

Further, if the receiving terminal cannot receive the incoming short message even after the specified number of retransmissions (maximum number of retransmissions) is reached, the SMSC 16 determines that the transmission of the message has failed and displays a short message transmission rejection display on the TCNC 17. Send a signal. When the receiving terminal can receive the receiving-side short message, the SMSC 16 transmits a short message transmission completion indication signal to the TCNC 17.

[0024] TCNC (Terminating Call possible No)
tification Center)
Based on an input signal received from the mobile switching system 15 or the SMSC 16, various processes relating to an incoming call notification service are executed (see FIGS. 4 to 7).

For example, based on the information registration request signal received from the mobile switching system 15, the TCNC 17 stores the information for the call arrival notification service (such as the subscriber numbers of the calling terminal and the called terminal) in a call arrival notification service table to be described later. 171 and create short message data to be transmitted to the calling terminal and the receiving terminal in a specified format (see FIG. 6). Then, a message request signal for requesting transmission of the receiving-side short message to the receiving terminal is transmitted to the SMSC 16.

When the TCNC 17 receives, from the SMSC 16, a short message transmission completion indication signal indicating that the receiving terminal has received the receiving-side short message, it issues a message request signal requesting transmission of the transmitting short message to the transmitting terminal. Send to SMSC16.

Further, upon receiving, from the SMSC 16, the short message transmission rejection indication signal indicating that the transmission of the short message for receiving to the receiving terminal has failed, the TCNC 17 selects from among the information registered in the reception possible notification service table 171 The information specified by the transmission rejection display is deleted.

The TCNC 17 stores an incoming call notification service table 171 as shown in FIG. This table 171 includes a receiving terminal, MSN (Mobility Subsc).
riber Number: subscriber number), flag, mail identifier I
D.

The reception possible notification table 171 stores the name of the receiving terminal as “receiving terminal”, the MSN of the receiving terminal and the transmitting terminal as “MSN”, and the receiving terminal is transmitted from the SMSC 16 as “flag”. A flag indicating whether a short message has been received (ON / OFF) is stored. The flag ON indicates that the receiving terminal has received the receiving-side short message (FIG. 6A), and the flag OFF indicates that the receiving terminal has not received the short message. The flag defaults to
It is set to OFF. Also, the table 171 is
As the “mail identifier ID”, between a pair of terminals (for example,
The numbers assigned to identify the outgoing / incoming call patterns of the mobile phone 1 and the mobile phone 2) are stored.

Further, the TCNC 17 stores a format used when creating short message data for the receiving side and for the transmitting side (see FIG. 6).

In FIG. 1, in order to simplify the description of the present embodiment, two portable telephones 1 and 2 subscribing to the incoming call notification service are interconnected via a network 10. However, if the terminal is a service subscribing terminal, the network 1
The number of mobile phones interconnected via 0 is not particularly limited.

Next, the operation of this embodiment will be described. In the following operation description, the mobile phones 1 and 2 are connected to MS (Mobile Sta.).
tion: a mobile station.

First, with reference to FIG. 2, a description will be given of a communication processing procedure before the start of the call arrival notification service when the MS 2 is talking with an MS other than the MS 1 or a fixed telephone.

First, when a user of MS1 performs a calling operation on MS2, MS1 transmits a call setting request signal to network 10 (step A1). Upon receiving the call setting request signal in step A1, the network 10 transmits a call setting request signal to the call destination MS2 (step A2), and sends a call setting request to the MS 1 as a response to the call setting request in step A1. A confirmation signal is transmitted (step A3).

In step A2, MS 2
Receiving a call setting request signal from the network 10, a release completion signal (reason value: Busy
(During a call)) (step A4).

Upon receiving the release completion signal in step A4, the network 10 reads out the terminal information of the MS 1 stored in the HLR 14, confirms that the call arrival notification service for the MS 1 is activated, and provides the MS 1 with an additional service. A notification signal is transmitted to notify that the reception possibility notification service is activated (step A5).

At this time, the network 10 reads out the MSNs of the MS1 and MS2 from the terminal registration information stored in the HLR 14 based on the call setup request signal of step A1, and receives the call arrival notification service information (MSN of MS1 and MS2). )
An information registration request signal for requesting the registration is transmitted to the TCNC 17 (step A6).

Next, the network 10 transmits a disconnection signal indicating that the communication path with the MS 2 is disconnected to the MS 1 (step A7). The MS 1 that has received the disconnection signal transmits a release signal indicating that the release (disconnection) of the communication path with the MS 2 is permitted to the network 10 as a response (step A8). Then, the network 10 that has received the release signal transmits a release completion signal indicating that disconnection of the MS 1 has been determined to the MS 1 (step A9). When the call release processing shown in steps A7 to A9 ends, a call arrival notification service described later is started (see FIG. 4).

Next, referring to the sequence diagram of FIG.
A description will be given of a communication processing procedure before the start of the call arrival notification service when S2 is out of the service area or the power is off.

When a user of MS1 performs a calling operation on MS2, MS1 sends a call setup request signal to network 1.
0 (step B1), and the network 10 sends a call setting request confirmation signal as a response to the call setting request to M.
It transmits to S1 (step B2). At this time, the network 10
A paging signal is transmitted to MS2 (step B3),
It is checked whether the power of S2 is ON, whether the MS2 is in the service area of the base station, and the like.

When confirming that there is no response to the paging from MS2, network 10 reads the terminal information of MS1 stored in HLR 14 and confirms that the call arrival notification service for MS1 is activated.
Transmits an additional service notification signal indicating that the call arrival notification service is activated (step B4).

At this time, the network 10 reads out the MSNs of the MS1 and MS2 from the terminal registration information stored in the HLR 14 based on the call setting request signal of step A1, and receives the call arrival notification service information (MSN of the MS1 and MS2). )
An information registration request signal for requesting the registration is transmitted to the TCNC 17 (step B5).

Next, the network 10 transmits a disconnection signal indicating that the communication path with the MS 2 is disconnected to the MS 1 (step B6). The MS 1 having received the disconnection signal transmits a release signal indicating that release (disconnection) of the communication path with the MS 2 is permitted to the network 10 as a response (step B7). Then, the network 10 that has received the release signal transmits a release completion signal to the effect that disconnection of the MS 1 has been determined to the MS 1 (step B8). When the call release processing shown in steps B6 to B8 ends, a call arrival notification service described later is started (see FIG. 4).

Next, with reference to the sequence diagram of FIG.
A communication processing procedure between the SMSC 16 and the mobile switching system 15 will be described.

When the mobile switching system 15 notifies the MS 1 of the activation of the call arrival notification service (corresponding to step A5 in FIG. 2 and step B4 in FIG. 3),
An information registration request signal for requesting registration of the call arrival notification service information (MSN of MS1 and MS2) to TCNC 17 (step C1: corresponding to step A6 in FIG. 2 and step B5 in FIG. 3).

Upon receiving the information registration request signal, TCNC 17 assigns a mail identifier (ID) to the outgoing / incoming call pattern between MS 1 and MS 2, and registers the above-mentioned incoming call notification service information in incoming call notification service table 171. . Then, the TCNC 17 creates, based on the registered information, short message data for the receiving side to be transmitted to the MS 2 and short message data for the transmitting side to be transmitted to the MS 1 in a designated format.

For example, if the MSN of MS1 is 090-aaaa-aaa
a, if the MSN of MS2 is 090-bbbb-bbbb and the mail identifier assigned to the outgoing / incoming pattern between MS1 and MS2 is 1, the information registered in the incoming call notification service table 171 in TCNC 17 , Shown in the upper part of FIG. In this example, since the stage before the short message is transmitted to the MS 2, the notification completion flag of the called side is:
The default value is set to OFF.

FIG. 6 shows an example of short message data created based on the registration information. In FIG. 6, the receiving side short message data (a) transmitted to the MS2 indicates that there is an incoming call from the other party whose telephone number is 090-aaaa-aaaa, and the transmitting side short message data (b) transmitted to the MS1. ) Is the phone number 090-bbbb-bbb
This indicates that it is now possible to talk to the other party b.

Next, TCNC 17 transmits a T to request that MS 2 transmit a short message for the called party.
A CNC message request signal is transmitted to the SMSC 16 (step C2). This message request includes the created short message data, mail identifier, destination address (MSN of MS2), and source address (MS2).
1 MSN).

When the SMSC 16 receives the message request signal from the TCNC 17, it constructs the above message for the short message protocol and sends a short message notification signal for requesting transmission of the short message for the called party to the MS2 to the mobile switching system 15. (Step C3).

Upon receiving the short message notification signal from the MSC 16, the mobile switching system 15 sets up a radio link and a short message connection with the MS2, and starts transmitting the short message to the MS2.

At this time, if the MS 2 is still in a call or is out of the service area (or the power is off) and the short message for the called party cannot be transmitted to the MS 2, the SMS 16
Transmits the message again after a predetermined time has elapsed.

If the MS 2 cannot receive the short message for terminating even after reaching the prescribed number of retransmissions (maximum number of retransmissions), the SMSC 16 determines that the transmission of the message has failed and sends a short message transmission rejection indication signal to the TCNC 17. (Step C4). This transmission rejection indication signal includes the mail identifier. At this time, S
The MSC 16 deletes the short message data for the receiving side scheduled to be transmitted to the MS 2 and the short message data for the transmitting side scheduled to be transmitted to the MS 1.

When the TCNC 17 receives the short message transmission rejection indication signal from the SMSC 16, the TCNC 17 selects information (eg, information) corresponding to the mail identifier included in the transmission rejection indication from among the information registered in the reception possible notification service table 171. , Information corresponding to the mail identifier 1 in FIG. 5).

On the other hand, when the short message for the receiving side can be received, for example, when the MS 2 moves from outside the service area to the service area, the SMSC 16 transmits a short message transmission completion indication signal to the TCNC 17 (step C5). The short message transmission completion display signal includes the mail identifier.

FIG. 7 shows an example of the timing at which the MS 2 shifts from outside the service area to the service area and a short message can be transmitted. In this example, the retransmission interval of the receiving-side short message from the SMSC 16 is set to about 30 to 60 minutes, the maximum number of retransmissions is set to 10, the number of retransmissions is the fourth, and the MS2
Indicates that the short message can be transmitted (service area), and the MS 2 has shifted to a state in which it can receive calls.

The TCNC 17 that has received the short message transmission completion signal from the SMSC 16 extracts information corresponding to the mail identifier included in the transmission completion signal from the information registered in the reception possible notification service table 171. Check the called party notification completion flag.

If the receiving side notification completion flag is OFF, the TCNC 17 sends a message transmission request signal requesting transmission of the transmitting side short message to the MS 1 to the MS 1.
The message is transmitted to the MSC 16 (step C2). At this time, the receiving side notification completion flag in the receiving possible notification service table 171 is set to ON.

The SMSC 16 having received the message transmission request signal from the TCNC 17 transmits a short message notification signal to the effect that the short message data for the transmitting side is transmitted to the MS 1 to the mobile switching system 15 (step C3).

Upon receiving the short message notification signal, the mobile switching system 15 sets a radio link and a short message connection with the MS 1 and transmits a short message for the transmitting side to the MS 1.

When SMSC 16 confirms that MS 1 has received the calling short message, TCNC 1
7, a short message transmission completion display signal is transmitted (step C5).

The TCNC 17 which has received the short message transmission completion signal from the SMSC 16 selects, from among the information registered in the reception possible notification service table 171, information corresponding to the mail identifier included in the transmission completion display signal (for example, FIG. 5 corresponding to the mail identifier 1), and confirms the receiving side notification completion flag. TCNC1
7 confirms that the receiving side notification completion flag is ON, clears the information corresponding to the mail identifier from the table 171.

As described above, according to the mobile phone system 100 of the present embodiment, the calling subscriber can receive a short message for the calling party, thereby making a call with the MS2 as the receiving terminal. In the meantime, the transmission operation need not be performed many times, and the transmission timing to the MS 2 can be measured.

When the MS2 owned by the called subscriber shifts from the busy, out of service, and power-off states to the standby state, the MS2 receives the short message for the called side indicating the telephone number of the calling terminal (MS1). By being able to do so, it is possible to foresee a retransmission from the calling subscriber. Also, in this case, the called subscriber will be urged to make a call to MS1.
It is possible to reduce the time until both parties can talk.

Furthermore, since the MS1 can receive the short message for the transmitting side, the transmission from the MS1 to the MS2 can be minimized. In addition, the time interval between the retransmission of the short message for the receiving side from the SMSC 16 to the MS2 is determined by the network. 10
The traffic load on the network 10 can be reduced because of the setting based on the traffic capability of the network 10.

[0066]

According to the portable telephone system of the present invention, the transmitting terminal receives the message for the transmitting side from the switching device, so that the receiving terminal can not only be in a call but also out of the service area and the power supply.
Even in the case of the FF state, it is possible to confirm that the receiving terminal has shifted from the call receiving impossible state to the standby state. Further, the transmitting terminal does not need to perform the transmitting operation to the receiving terminal many times, and can measure the timing of transmitting to the receiving terminal. Further, since transmission from the transmitting terminal to the receiving terminal can be minimized, the load on traffic in the mobile communication network can be reduced.

[Brief description of the drawings]

FIG. 1 is a diagram showing an overall configuration of a mobile phone system 100 to which the present invention is applied.

FIG. 2 is a sequence diagram illustrating a communication processing procedure between the MS1, the network 10, and the MS2 before the start-of-call notification service to which the present invention is applied is started when the MS2 is busy.

FIG. 3 shows that when MS2 is out of service area or the power is off,
FIG. 7 is a sequence diagram illustrating a communication processing procedure between the MS 1, the network 10, and the MS 2 before a reception possibility notification service to which the present invention is applied is started.

FIG. 4 is a sequence diagram showing a communication processing procedure between the TCNC 17, the SMSC 16, and the mobile switching system 15 when the incoming call notification service to which the present invention is applied is implemented.

FIG. 5 is a diagram showing an incoming call notification service table 171 held by the TCNC 17;

FIG. 6 is a diagram showing short message data for a call arrival notice service.

FIG. 7 is a diagram illustrating an example of a timing at which an MS2 can receive a call;

[Explanation of symbols]

1, 2 Mobile phone (MS) 10 Network 11, 12 Base station 13 Base station controller 14 HLR (Home location center) 15 Mobile switching system 16 SMSC (Short message service center) 17 TCNC (Receivable notification center) 171 Incoming call Possible notification service table 100 mobile phone system

Claims (5)

[Claims] 1. A mobile telephone system in which an outgoing call from an outgoing portable terminal is connected to an incoming portable terminal by an exchanging device provided in a mobile communication network. When the incoming portable terminal is in a call-disabled state, the call setting request from the outgoing portable terminal and the terminal registration information stored in advance in the mobile communication network are used to establish a communication between the outgoing portable terminal and the incoming portable terminal. Registering means for registering information relating to outgoing / incoming calls in the own device; a message for a receiving side indicating the presence of an incoming call from the transmitting / receiving mobile terminal based on the incoming / outgoing call information registered in the registering means; Message generating means for generating a message for the transmitting side indicating the transition to the standby state of the mobile terminal; and a message for the receiving side generated by the message generating means. Transmitting means for transmitting the message for the transmitting side to the transmitting portable terminal at a predetermined timing, respectively. 2. The mobile phone according to claim 1, wherein said transmitting means transmits a message for a calling party to said calling portable terminal when the receiving portable terminal confirms receipt of a message for a calling party. system. 3. When the receiving portable terminal fails to receive the receiving-side message transmitted by the transmitting means,
2. The transmission device according to claim 1, wherein the transmission unit transmits the message for the receiving side again after a predetermined time has elapsed.
Mobile phone system as described. 4. The mobile phone system according to claim 3, wherein the number of retransmissions of the receiving side message to the receiving mobile terminal does not exceed a predetermined number. 5. A portable terminal device for making and receiving calls via a switching device provided in a mobile communication network, wherein when a terminal in a call-disabled state shifts to a standby state, the presence of a call from a calling portable terminal is detected. Receiving means for receiving a message for the receiving side from the switching device, the receiving device confirming the reception of the message for the receiving side of the receiving portable terminal which has been in the receiving disabled state, when the own terminal is the transmitting side. Then, the receiving means further receives, from the switching device, a message on the transmitting side indicating that the incoming portable terminal shifts to a standby state.