WO2007111358A1

WO2007111358A1 - Server and wireless communication terminal

Info

Publication number: WO2007111358A1
Application number: PCT/JP2007/056738
Authority: WO
Inventors: Masanori Nishimori
Original assignee: Kyocera Corporation
Priority date: 2006-03-28
Filing date: 2007-03-28
Publication date: 2007-10-04
Also published as: JP2007266992A; JP4413201B2

Abstract

A server comprises a midway-participation notification receiving part that receives, during a group telephone conversation executed by use of half-duplex operation system among a plurality of wireless communication terminals, a midway-participation notification, from a wireless communication terminal currently not participating in the group telephone conversation, to the effect that this wireless communication terminal will participate, on the midway, in the group telephone conversation; and a speech-right investing part that invests, to a midway-participant terminal, a speech right, which is a right to transmit a telephone conversation data, when the speech right is released after the midway-participation notification receiving part receives a midway-participation notification from a currently-not-participating wireless communication terminal so that the currently-not-participating wireless communication terminal is registered as the midway-participant terminal with the group telephone conversation.

Description

Specification

Server and wireless communication terminal

Technical field

TECHNICAL FIELD [0001] The present invention relates to a server and a wireless communication terminal used in a group call performed between a plurality of wireless communication terminals. Background art

[0002] In recent years, even in mobile communication systems, IP-based voice communication has been performed using SIP (Session Initiation Protocol) that performs call control between wireless communication terminals (for example, mobile phone terminals). (See "SIP: Session Initiation Protocol", RFC3261)

[0003] Further, in such a mobile communication system, a group call, which is voice communication performed between a plurality of wireless communication terminals, is also realized.

[0004] In particular, in recent years, group calls using half-duplex communication (PTT: Push), in which only wireless communication terminals to which "speaking rights" are granted, can transmit call data to other wireless communication terminals. — To— Talk, etc.) are attracting attention.

Here, the “speaking right” is a right to transmit call data to another wireless communication terminal, which is given to only one of the wireless communication terminals in the group call as described above. is there. The right to speak is granted by the server in response to a request from the wireless communication terminal.

Disclosure of the invention

[0006] In the group call described above, the wireless communication terminal participates in the group call and displays information on the wireless communication terminal (user name or identification number of the wireless communication terminal) on the display screen. The The display will allow each participant to recognize other participants participating in the group call.

[0007] However, the user of the wireless communication terminal participating in the group call does not always look closely at the display screen.

[0008] In particular, participation in group calls, strong wireless communication terminal power When the intermediate force also participates, even if the information of the wireless communication terminal that participated in the group call (intermediate participation terminal) is additionally displayed on the display screen, the user of the wireless communication terminal participating in the group call is If there is a case where a change in the display is not recognized, there is a problem o

[0009] Therefore, the present invention has been made in view of the above points, and the user power of V, a wireless communication terminal participating in a group call, allows a wireless communication terminal that has participated in a group call to be quickly and quickly. It is an object to provide a server and a wireless communication terminal that can be surely recognized.

[0010] A first feature of the present invention is that a speaking right, which is a right to transmit call data, in a group call executed by a half-duplex communication method between a plurality of wireless communication terminals is assigned to the plurality of wireless communication terminals. A mid-participation notification that receives a mid-participation notification indicating that the group call is to be joined in the middle of the group call from the wireless communication terminal that has not participated in the group call during the group call. After the receiving unit and the mid-participation notification receiving unit receive the mid-participation notification from the non-participating wireless communication terminal, and the non-participating wireless communication terminal is registered as the mid-participation terminal in the group call, the remark The gist of the invention is that the server includes a speaking right granting unit that grants the speaking right to the midway participating terminal when the right is released.

[0011] According to a powerful feature, during a group call, the server (SIP server 200) joins the group call halfway participating terminal (wireless communication terminal 100D) after receiving a powerful halfway join request, When the right to speak granted to (wireless communication terminal 100A) is released, the user of the midway participation terminal can speak by giving the right to speak to the midway participation terminal. Therefore, it is possible for the user of the participating terminal to recognize the participating terminal on the way quickly and reliably.

[0012] In the first feature of the present invention, when the midway participation notification receiving unit receives the midway participation notification from the non-participating wireless communication terminal, it is given to one of the plurality of wireless communication terminals. A speaking right releasing unit that releases the right to speak, and when the speaking right is released by the speaking right releasing unit, the speaking right granting unit grants the speaking right to the halfway participating terminal. May be. [0013] According to the powerful feature, during a group call, after the server receives a midway join request from the midway join terminal, it is granted to another wireless communication terminal during the group call to release the right to speak. Then, by granting the right to speak to the midway participating terminal, the server can forcibly give the right to speak to the midway participating terminal.

[0014] In the first aspect of the present invention, when the midway participation notification receiving unit receives the midway participation notification from the midway participation terminal, the wireless communication terminal to which the right to speak is given In response to the request for releasing the right to speak, from a request for releasing the right to speak to request the release of the right to speak and the wireless communication terminal to which the right to speak has been granted. A speaking right release permission notification receiving unit that receives a right to release permission notification indicating that the right has been released, wherein the speaking right granting unit receives the right to release speaking right notification The right to speak may be granted to the halfway participating terminal when receiving the message.

[0015] According to a powerful feature, when a server receives a mid-participation request from a mid-participation terminal during a group call, it is granted a right to speak! When a right to release permission is received, the right to speak is granted to the participating terminal. Therefore, a wireless communication terminal to which a right to speak is granted when the server receives a midway participation request from a midway participation terminal is not forcibly released.

[0016] In the first aspect of the present invention, a speaking right release notification receiving unit that receives a speaking right release notification indicating that the speaking right has been released from the wireless communication terminal to which the speaking right has been granted, is further provided. The speaking right granting unit may grant the speaking right to the midway participation terminal when the speaking right release notification receiving unit receives the speaking right release notification.

[0017] According to a powerful feature, when a server receives a mid-participation request from a mid-participation terminal during a group call, the right to speak is granted! When the notification is received, the server grants the right to speak to the midway participation terminal, so that even if the server receives the midway participation request from the midway participation terminal, the wireless communication terminal is granted the right to speak. Transmission of call data can be continued.

[0018] In the first feature of the present invention, the speaking right granting unit grants the speaking right to the halfway participating terminal and after a predetermined time, the speaking right releasing unit attaches to the halfway participating terminal. When the right to speak is released, and the right release unit releases the right to speak given to the midway participating terminal, the right granting unit The right to speak may be granted to the wireless communication terminal that has been given the right to speak when receiving the midway participation notification.

[0019] According to a powerful feature, during a group call, a wireless communication terminal that has been given the right to speak when the server receives a midway participation request from a midway participation terminal grants the right to speak to the midway participation terminal. The right to speak can be acquired again after a predetermined time.

[0020] A second feature of the present invention is that a server has a right to speak, which is a right to transmit call data, in a group call executed by a half-duplex communication method between a plurality of wireless communication terminals. A mid-participation notification receiving unit for receiving from the server a mid-participation notification indicating that a radio communication terminal not participating in the group call participates in the group call during the group call. When the mid-participation notification receiving unit receives the mid-participation notification from the server, a right-of-speak release notification is sent to the server to release the right to speak given by the server. The gist of the present invention is that the wireless communication terminal includes a transmission unit.

[0021] In the second aspect of the present invention, the server is configured to receive a floor request operation for requesting the server to grant the floor, and a floor release operation for releasing the floor that has been granted. And when the mid-participation notification receiving unit receives the mid-participation notification from the server when the speaking right is granted, the speaking right release notification transmitting unit is Even if the floor release operation is not accepted, the floor release notification may be sent to the server.

[0022] A third feature of the present invention is that a server has a right to speak, which is a right to transmit call data, in a group call executed by a half-duplex communication method between a plurality of wireless communication terminals. A mid-participation notification receiving unit for receiving from the server a mid-participation notification indicating that a radio communication terminal not participating in the group call participates in the group call during the group call. And a wireless communication terminal that releases the right to speak when the midway participation notification is received. According to the feature of the present invention, there is provided a server and a wireless communication terminal that can quickly recognize a wireless communication terminal participating in a group call from the middle of a user power of the wireless communication terminal participating in the group call. Can be provided. Brief Description of Drawings

FIG. 1 is an overall schematic configuration diagram of a mobile communication system according to an embodiment of the present invention.

FIG. 2 is a block diagram of a SIP server according to the embodiment of the present invention.

FIG. 3 is a block configuration diagram of a radio communication terminal according to an embodiment of the present invention.

FIG. 4 is a sequence diagram (11) showing an operation (interrupt processing) in which the radio communication terminal 100D of the mobile communication system according to the embodiment of the present invention participates in a group call halfway.

FIG. 5 is a sequence diagram (12) showing an operation (interrupt processing) in which the radio communication terminal 100D of the mobile communication system according to the embodiment of the present invention participates in the middle of a group call.

FIG. 6 is a sequence diagram (13) showing an operation (interrupt processing) in which the radio communication terminal 100D of the mobile communication system according to the embodiment of the present invention joins a group call halfway.

[FIG. 7] FIG. 7 is a sequence diagram (2-1) showing an operation of assigning a floor to the radio communication terminal 100D in the mobile communication system according to the embodiment of the present invention.

[Fig. 8] Fig. 8 is a sequence diagram (2-2) showing an operation of assigning a floor to the radio communication terminal 100D in the mobile communication system according to the embodiment of the present invention.

[Fig. 9] Fig. 9 is a sequence diagram (2-3) showing an operation of assigning a floor to the radio communication terminal 100D in the mobile communication system according to the embodiment of the present invention.

[Fig. 10] Fig. 10 is a sequence diagram (2-4) showing an operation of assigning a floor to the radio communication terminal 100D in the mobile communication system according to the embodiment of the present invention.

FIG. 11 is a diagram showing a display screen of radio communication terminals 100A to 100C according to another embodiment of the present invention.

[FIG. 12] FIG. 12 is a diagram of radio communication terminals 100A to 100C according to other embodiments of the present invention. It is a figure which shows a display screen.

BEST MODE FOR CARRYING OUT THE INVENTION

[Schematic configuration of mobile communication system]

A schematic configuration of the wireless communication network according to the present embodiment will be described with reference to FIG.

[0026] In this specification, a group call is a call such as PTT (Push-to-Talk), which is a kind of VoIP (Voice over IP) communication, or a half-duplex communication of voice and video. This refers to communication between multiple terminals, mainly using half-duplex communication, such as video teleconference with duplex communication.

[0027] In addition, the right to speak is another wireless communication terminal (for example, wireless communication) that is granted only to any one wireless communication terminal (for example, wireless communication terminal 100A) in the group call as described above. This is the right to transmit call data to the communication terminals 100B and 100C).

[0028] The call data may include moving image data as well as voice data.

As shown in FIG. 1, the mobile communication system includes a SIP server 200 and an SMS (Short Message Service) server 300. The wireless communication terminals 100A to 100D according to the present embodiment are configured to be connectable to the SIP server 200 and the SMS server 300 via the wireless communication network 1.

[0030] Hereinafter, in this specification, the wireless communication terminals 100A to 100C are wireless communication terminals participating in a group call, and the wireless communication terminal 100D is a wireless communication terminal participating in a group call from the middle (participation in the middle). It is assumed that it is a (participating terminal). Also, the floor shall be granted to the wireless communication terminal 100A.

[0031] The SIP server 200 grants the right to speak only to one wireless communication terminal (for example, the wireless communication terminal 100A) in response to a request from the wireless communication terminals 100A to 100C.

[0032] SMS server 300 transmits, to wireless communication terminal 100D, a request for participation in group call for wireless communication terminal 100D from wireless communication terminals 100A to 100C during the group call.

[0033] (Configuration of SIP server)

Referring to Fig. 2, the configuration of SIP server 200 used in the mobile communication system explain about.

As shown in FIG. 2, the SIP server 200 includes an interrupt processing unit 210, a transmission / reception unit 220, a speaking right giving unit 230, a speaking right releasing unit 240, and a storage unit 250.

[0035] Hereinafter, portions related to the present invention will be mainly described. Therefore, it should be noted that the SIP server 200 may include a logic block (such as a power supply unit) that is essential for realizing the function as the SIP server 200 and that is not illustrated or omitted.

[0036] The interrupt processing unit 210 performs processing for the wireless communication terminal 100D that has not participated in the group call to participate in the group call halfway.

[0037] Specifically, the interrupt processing unit 210 receives a call request (for example, an INVITE message) from any of the plurality of wireless communication terminals 100A to 100C participating in the group call to the non-participating wireless communication terminal 100D. ) Is received, a call notification (for example, INVITE message) is transmitted to the wireless communication terminal 100D. Further, the interrupt processing unit 210 receives a response (participation notification) (for example, an ACK message) from the wireless communication terminal 100D to the transmitted call notification.

[0038] The interrupt processing unit 210 receives a call request (notification of midway participation) (for example, INVITE message) from the wireless communication terminal 100D to the wireless communication terminals 100A to 100C during the group call.

[0039] That is, the "halfway participation notification" may be either a response from the wireless communication terminal 100D to the call notification or a transmission request to the wireless communication terminals 100A to 100C.

[0040] The transmission / reception unit 220 receives a request to acquire a right to speak from the wireless communication terminals 100A to 100C during a group call. In addition, the transmission / reception unit 220 transmits a speaking right grant notification based on an instruction from the speaking right granting unit 230. That is, the request for acquisition of the right to speak is a request for granting the right to speak to the SIP server 200 from the wireless communication terminals 100A to 100C. Also, the floor-to-speech notification is a notification that the SIP server 200 has granted floor to any of the wireless communication terminals 100A to 100C.

[0041] The transmission / reception unit 220 is granted a right to speak! Receive. That is, the floor release notification is a notification to the SIP server 200 that the wireless communication terminal to which the floor is granted releases the floor.

The transmission / reception unit 220 transmits a request for releasing the right to speak to the wireless communication terminal to which the right to speak is granted. In other words, a request to release a floor is a request that the SIP server 200 is granted a floor.

V, requesting the radio communication terminal to release the right to speak.

[0043] In response to the request to release the right to speak, the transmission / reception unit 220 gives a right to speak (release right permission notice) indicating that the right to speak has been released. Receive from.

[0044] The right-to-speak unit 230 determines whether or not the right to speak is released in response to a request to obtain the right to speak from a wireless communication terminal during a group call, and adds the right to speak according to the determination result. Control.

[0045] Specifically, the right-to-speak granting unit 230 grants a right to speak even to a radio communication terminal that is out of position when the right-to-speak information stored in the storage unit 250, which will be described later, is in a group call. However, if it indicates that the right to speak is available, the right to speak is granted to the wireless communication terminal requesting the right to speak.

[0046] When the speaking right granting unit 230 grants the right to speak to any of the wireless communication terminals in the group call, the right to speak is given to the storage unit 250 to indicate that the right to speak is empty. Update information. Further, the speaking right granting unit 230 instructs the transmitting / receiving unit 220 to transmit a speaking right granting notification to the wireless communication terminal to which the speaking right is granted.

[0047] On the other hand, speaking right granting information stored in the storage unit 250, which will be described later, gives the right to speak to any wireless communication terminal! / When it indicates “empty !, te, na! /,)”, The floor-to-bottom grant unit 230 responds to the floor-right acquisition request from the wireless communication terminal (does not grant the floor).

[0048] In response to an instruction from the right-to-speak release unit 240, the right-to-speak granting unit 230 grants the right to speak to the wireless communication terminal 100D, and the right to speak is empty! The floor grant information in the storage unit 250 is updated to indicate that the floor is granted to the wireless communication terminal.

[0049] The speaking right release unit 240 is configured such that the interrupt processing unit 210 joins the wireless communication terminal 100D halfway. When the notification is received, the right to speak is given to one of the wireless communication terminals during the group call, and the right to speak is given to the wireless communication terminal 100D. To instruct.

[0050] The right-to-speak release unit 240 releases the right to speak to the wireless communication terminal 100D after a predetermined time from when the right to speak speaks to the wireless communication terminal 100D. Instructs the speaking right granting unit 230 to grant the speaking right (return the speaking right) to the wireless communication terminal that has been granted the right to speak before the terminal 100D.

[0051] Storage unit 250 stores speaking right granting information for identifying which of the radio communication terminals 100A to 100D has the right to speak. For example, the right to speak may be status such as “1” (with right to speak), “0” (without right to speak), etc.! /.

[0052] (Configuration of wireless communication terminal)

With reference to FIG. 3, the configuration of the radio communication terminal used in the mobile communication system will be described.

As shown in FIG. 3, the wireless communication terminal 100 includes a transmission / reception unit 110, a speaking right acquisition unit 120, a speaking right release unit 130, an interrupt processing unit 140, and an operation unit 150.

[0054] Hereinafter, portions related to the present invention will be mainly described. Therefore, the wireless communication terminal 100 may include a logical block (a power supply unit, a display unit, an imaging unit, etc.) that is indispensable for realizing the function as the wireless communication terminal 100 and that is not illustrated or omitted. Please note that there is.

The transmission / reception unit 110 transmits a request for acquiring a right to speak to the SIP server 200 based on an instruction from the right to speak unit 120. In addition, the transmission / reception unit 110 receives a floor-right grant notification from the SIP server 200.

The transmission / reception unit 110 transmits a speaking right release notification to the SIP server 200 based on an instruction from the speaking right release unit 130.

The transmitting / receiving unit 110 receives a floor release request from the SIP server 200. Transceiver 11

0 transmits a floor release notification or a floor release rejection notification to the SIP server 200 based on an instruction from the floor release unit 130.

The speaking right acquisition unit 120 detects that a predetermined button of the operation unit 150 has been pressed, and performs SIP. The transceiver unit 110 is instructed to transmit a request to acquire a floor to the server 200.

[0059] The floor release unit 130 detects that the predetermined button on the operation unit 150 has been pressed, that is, releases the floor that has been granted, and sends the floor to the SIP server 200. Instructs the transceiver 110 to send a release notification.

[0060] In response to the request for releasing the right to speak received by the transmitting / receiving unit 110, the right to release floor 130 transmits a right to speak release notification (speaking right release permission notification) to the SIP server 200. To the transceiver 110.

[0061] The floor release unit 130 is configured so that the interrupt processing unit 140, which will be described later, receives a mid-participation notification of the wireless communication terminal 100D from the SIP server 200, even if the button of the operation unit 150 is pressed. Instructs the transceiver 110 to send a floor release notification to the SIP server 200.

[0062] When the interrupt processing unit 140 (to be described later) receives a mid-participation notification of the wireless communication terminal 100D from the SIP server 200, the floor release unit 130 releases the floor that has been granted.

[0063] During the group call, the interrupt processing unit 140 receives, from the SIP server 200, a mid-participation notification that notifies that the wireless communication terminal 100D participates in the group call.

[0064] The operation unit 150 includes various keys and buttons operated by the user.

[0065] (Communication method)

Hereinafter, the communication method according to the present embodiment will be described with reference to FIGS.

[0066] First, an operation (interrupt processing) in which wireless communication terminal 100D joins a group call halfway during a group call will be described.

[0067] (1-1) Example of wireless communication terminal 100A calling wireless communication terminal 100D during a group call

Figure 4 [As shown here, Step S110 [Koo!] All the wireless communication terminals 100A, 100B and lOOCi are engaged in group calls.

[0068] In step S120, the wireless communication terminal 100A makes a call request to the SIP server 200 for the wireless communication terminal 100D. That is, the call request is the wireless communication terminal 100. D requests to join a group call.

[0069] In step S130, the SIP server 200 transmits, to the SMS server 300, a call notification for notifying that a call request for the wireless communication terminal 100D has been made from the wireless communication terminal 100A.

[0070] In step S140, SMS server 300 transmits the call notification received from SIP server 200 to radio communication terminal 100D.

In step S150, wireless communication terminal 100D performs a location registration process for SIP server 200. The SIP server 200 manages identification information (for example, a telephone number and an IP address) of the wireless communication terminal 100D by the location registration process.

In step S 160, radio communication terminal 100 D transmits a response notification for the call notification from SIP server 200 to SIP server 200. That is, the wireless communication terminal 100D transmits a midway participation notification to the SIP server 200.

[0073] In step S170, a communication connection between the radio communication terminal 100D and the SIP server 200 is established, and a group call by the radio communication terminals 100A to 100D is established.

(1 1 2) Example in which wireless communication terminal 100D transmits a transmission request to wireless communication terminals 100A to 100C

Figure 5 [As shown here, Step S210 [This is a wireless communication terminal 100A, 100B, lOOCi]

Have a group call.

In step S220, radio communication terminal 100D performs a location registration process for SIP server 200. The SIP server 200 manages identification information (for example, a telephone number and an IP address) of the wireless communication terminal 100D by the location registration process.

In step S230, radio communication terminal 100D transmits a call request to radio communication terminals 100A to 100C to SIP server 200. That is, wireless communication terminal

The 100D transmits a midway participation notification to the SIP server 200.

[0077] In step S240, the SIP server 200 determines that the wireless communication terminals 100A, 100B, 100

An incoming call notification from the wireless communication terminal 100D is transmitted to C.

In step S250, SIP server 200 sends a response notification to radio communication terminal 100D. [0079] In step S260, a communication connection between the radio communication terminal 100D and the SIP server 200 is established, and a group call by the radio communication terminals 100A to 100D is established.

[0080] (1-3) Example in which wireless communication terminal 100D transmits a call origination request to wireless communication terminal 100A

Figure 6 [As shown here, Step S310 [This is a wireless communication terminal 100A, 100B, lOOCi]

Have a group call.

In step S320, wireless communication terminal 100D performs a location registration process for SIP server 200. The SIP server 200 manages identification information (for example, a telephone number and an IP address) of the wireless communication terminal 100D by the location registration process.

In step S330, wireless communication terminal 100D transmits a call origination request to radio communication terminal 100A to SIP server 200. That is, the wireless communication terminal 100D

Then, a midway participation notification is sent to the SIP server 200.

[0083] In step S340, the SIP server 200 transmits an incoming call notification from the radio communication terminal 100D to the radio communication terminal 100A.

[0084] In step S350, wireless communication terminal 100A notifies SIP server 200 of a response to the incoming call notification from wireless communication terminal 100D.

In step S360, the SIP server 200 responds to the wireless communication terminal 100D in response to a response notification from the wireless communication terminal 100A.

[0086] In step S370, a communication connection between the wireless communication terminal 100D and the SIP server 200 is established, and a group call by the wireless communication terminals 100A to 100D is established.

[0087] Secondly, during a group call, if any of the above-mentioned midway participation operation (interrupt processing) in the group call by the wireless communication terminal 100D is performed, the SIP server 200 transmits the right to speak. The operation temporarily given to terminal 100D will be described.

(2-1) Example in which SIP server 200 is granted to wireless communication terminal 100A to forcibly release the right to speak and grant the right to speak to wireless communication terminal 100D

FIG. 7 is a sequence diagram (2-1) showing an operation of assigning the floor to the radio communication terminal 100D.

[0089] In step S410, wireless communication terminal 100D moves to join the group call halfway. Either one of the operations (interrupt processing) is performed (see Figures 4 to 6).

[0090] For example, in the mid-participation operation in which the wireless communication terminal 100A in a group call shown in FIG. 4 calls the wireless communication terminal 100D, it is desirable to give the floor to the wireless communication terminal 100D by this sequence.

[0091] In step S420, the wireless communication terminal 100D transmits a request to acquire a right to speak to the SIP server 200. In addition, the request for obtaining the right to speak is issued by the wireless communication terminal 1 described above.

In the mid-participation operation to the group call by OOD, the mid-participation notification sent by the wireless communication terminal 100D to the SIP server 200 (step S160 in FIG. 4, step in FIG.

S230, S330 in Figure 6) [You can include this.

[0092] In step S430, SIP server 200 releases the right to speak given to wireless communication terminal 100A. In addition, the SIP server 200 transmits a floor release notification to the radio communication terminal 100A for notifying that the floor granted to the radio communication terminal 100A has been released.

[0093] In step S440, the SIP server 200 grants the right to speak to the wireless communication terminal 100D, and transmits a right to speak to notify the wireless communication terminal 100D that the right to speak has been granted.

(2-2) When the SIP server 200 requests the wireless communication terminal 100A to release the right to speak and the wireless communication terminal 100A releases the right to speak in response to the request, the SIP server 200 grants the right to speak to the wireless communication terminal 100D. Example to grant

FIG. 8 is a sequence diagram (2-2) showing an operation of assigning the right to speak to the radio communication terminal 100D. Steps S510 to S520 are the same as steps S410 to S420 in FIG.

[0095] Also, in the mid-participation operation in which wireless communication terminal 100D shown in FIG. 6 transmits a call request to wireless communication terminal 100A, it is desirable to give the floor to wireless communication terminal 100D by this sequence.

[0096] As shown in FIG. 8, in step S530, the SIP server 200 transmits a request to release a floor to the wireless communication terminal 100A to which the floor is granted.

[0097] In step S530, wireless communication terminal 100A receives from SIP server 200. In response to the request to release the right to speak, it is determined whether or not to release the right to speak.

In step S540, radio communication terminal 100A transmits a floor release notification to SIP server 200 when it is granted!

[0099] When the SIP server 200 receives the floor release notification from the wireless communication terminal 100A in step S540 !, the SIP server 200 releases the floor granted to the wireless communication terminal 100A in step S550. To give the right to speak to the wireless communication terminal 100D, and transmit the right to speak to the wireless communication terminal 100D.

[0100] In step S560, if the floor granted to the wireless communication terminal 100A is not released, a floor release rejection notification is transmitted to the SIP server 200.

[0101] In step S570, the SIP server 200 receives a floor release rejection notification from the wireless communication terminal 100A. Then, since the SIP server 200 cannot grant the right to speak to the wireless communication terminal 100D, the SIP server 200 transmits a floor right grant failure notification to the wireless communication terminal 100D.

[0102] (2-3) Wireless communication terminal 100A force Example of granting the right to speak to wireless communication terminal 100D when the right to speak is released based on the button operation by the user

FIG. 9 is a sequence diagram (2-3) showing an operation of assigning the right to speak to the radio communication terminal 100D. Steps S610 to S620 are the same as steps S410 to S420 in FIG.

[0103] In addition, in the mid-participation operation in which the wireless communication terminal 100D shown in Fig. 5 transmits a call request to the wireless communication terminals 100A to 100C, it is desirable to give the floor to the wireless communication terminal 100D by this sequence. ,.

[0104] As shown in FIG. 9, in step S630, the wireless communication terminal to which the floor is granted

100A detects that the user has pressed the button and releases the floor release notification.

Send to SIP server 200.

[0105] When the SIP server 200 receives the floor release notification from the radio communication terminal 100A in step S630, the SIP server 200 releases the floor of the radio communication terminal 100A. In step S640, the SIP server 200 grants the floor to the wireless communication terminal 100D, and the wireless communication terminal 1

Send a floor-right notification to OOD. (2-4) Wireless communication terminal 100A power When wireless communication terminal 100D receives an incoming call notification indicating that it has joined a group call from SIP server 200, even if it detects that the user has pressed the button, Example of releasing the floor

FIG. 10 is a sequence diagram (2-4) showing an operation of assigning the right to speak to the radio communication terminal 100D. Note that steps S710 to S720 are the same as steps S410 to S420 in FIG.

[0107] As shown in FIG. 10, in step S730, the SIP server 200 transmits an incoming call notification to the radio communication terminal 100A. It should be noted that the strong incoming call notification includes the response (step S170 in FIG. 4) performed by the SIP server 200 to the wireless communication terminal 100A and the SIP server 200 in the mid-group join operation by the wireless communication terminal 100D described above. Corresponds to the incoming notification (step S240 in FIG. 5, S340 in FIG. 6) transmitted to the wireless communication terminal 100A.

[0108] In step S740, the wireless communication terminal 100A to which the right to speak is granted transmits a floor right release notification to the SIP server 200 even if it is detected that the button is pressed by the user. .

In step S750, SIP server 200 receives a floor release notification from radio communication terminal 100A. Then, the SIP server 200 grants the right to speak to the wireless communication terminal 100D and transmits a right to speak notification to the wireless communication terminal 100D.

[0110] (Action 'effect)

According to the wireless communication terminal 100A according to the present embodiment, during a group call, the SIP server 200 (server) has received a halfway participation request from the wireless communication terminal 100D (halfway participation caro terminal) participating in the group call halfway. Thereafter, when the right to speak is granted to the radio communication terminal 100A, the user of the radio communication terminal 100D can speak by giving the right to speak to the radio communication terminal 100D. Therefore, it is possible to quickly and reliably recognize the participation of the wireless communication terminals 100A to 100C.

[0111] According to the wireless communication terminal 100A according to the present embodiment, during a group call, after the SIP server 200 receives a midway participation request of the wireless communication terminal 100D, the wireless communication terminal 10A The SIP server 200 can forcibly give the right to speak to the wireless communication terminal 100D by releasing the right to speak to the OA and granting the right to speak to the wireless communication terminal 100D.

[0112] According to the wireless communication terminal 100A according to the present embodiment, when a SIP server 200 receives a midway participation request for the wireless communication terminal 100D during a group call, the wireless communication terminal 100A is given a right to speak. When the floor release request is transmitted to the communication terminal 100A and the floor release notification is received, the floor is granted to the radio communication terminal 100D. Therefore, the wireless communication terminal 100A to which the right to speak is granted when the SIP server 200 receives the midway participation request of the wireless communication terminal 100D cannot be forcibly released.

[0113] According to the wireless communication terminal 100A according to the present embodiment, when the SIP server 200 receives a mid-participation request from the wireless communication terminal 100D during a group call, the right to speak based on an operation by the wireless communication terminal 100A is received. When the release notification is received, the SIP server 200 grants the right to speak to the wireless communication terminal 100D, so that even if the server receives a midway participation request from the midway participation terminal, the participation that was granted the right to speak The terminal can continue sending call data.

[0114] According to the wireless communication terminal 100A according to the present embodiment, when the SIP server 200 receives a midway participation request for the wireless communication terminal 100D during a group call, the wireless communication terminal 100A is granted a right to speak. The communication terminal 100A can acquire the right to speak again after a predetermined time from giving the right to speak to the wireless communication terminal 100D.

[0115] (Other Embodiments)

Note that this embodiment has described the case where SIP is used as the communication protocol. The present invention is not limited to such a case, and there is another communication protocol that can realize the operation of the first embodiment. It can also be applied when other communication protocols are used.

[0116] For example, when the present invention is applied to a videophone, as shown in FIG. 11, on the display screen of the radio communication terminals 100A to 100C during a group call, the radio communication terminal 100A to which the right to speak is assigned. Display video. If the SIP server 200 receives a midway participation request from the wireless communication terminal 100D, the wireless On the display screens of the communication terminals 100A to 100C, the video of the wireless communication terminal 100D to which the floor is temporarily granted may be displayed together.

Further, the SIP server 200 of the present embodiment may provide various functions by including a group call server.

[0118] Although an example of the present invention has been described above, only a specific example has been illustrated, and the specific configuration and the like of each part that does not specifically limit the present invention can be appropriately changed in design. In addition, the configuration of each embodiment and the configuration of each modified example can be combined. The actions and effects of each embodiment and each modified example are merely a list of the most preferable actions and effects resulting from the present invention, and the actions and effects according to the present invention are described in each embodiment and each modified example. It is not limited to the ones.

[0119] The entire contents of Japanese Patent Application No. 2006-89139 (filed on Mar. 28, 2006) are incorporated herein by reference.

Industrial applicability

[0120] Since the server and the wireless communication terminal according to the present invention participate in the group call, the user of the wireless communication terminal can quickly and reliably recognize the wireless communication terminal that has joined the group call from the middle. Useful for wireless communications such as mobile communications

Claims

The scope of the claims

[1] For a group call executed by a half-duplex communication method between a plurality of wireless communication terminals, a right to speak, which is a right to transmit call data, is determined from among the plurality of wireless communication terminals.

A server that grants to one

During the group call, the mid-participation notification receiving unit and the mid-participation notification receiving unit for receiving the mid-participation notification indicating that the group call is partway joined from the wireless communication terminal that has not participated in the group call. When the mid-participation notice is received from the wireless communication terminal and the non-participating wireless communication terminal is registered in the group call as the mid-participation terminal, the right to speak is released when the right to speak is released. A server characterized by comprising a right-to-speak granting unit to be granted.

[2] A statement that releases the right to speak given to one of the plurality of wireless communication terminals when the midway participation notification receiving unit receives the midway participation notification from the non-participating wireless communication terminal Further comprising a rights release unit,

2. The server according to claim 1, wherein, when the speaking right is released by the speaking right releasing unit, the speaking right granting unit gives the speaking right to the halfway participating terminal.

[3] When the midway participation notification receiving unit receives the midway participation notification from the non-participating wireless communication terminal, the right to speak is released to the wireless communication terminal to which the right to speak is granted. A floor release request section for transmitting a floor release request to request,

A right-to-speak release permission notification receiving unit that receives a right-to-speak release permission notification in response to the right-to-speak release request from the wireless communication terminal that has been granted the right to speak. Further comprising

2. The server according to claim 1, wherein the speaking right granting unit grants the speaking right to the midway participating terminal when the speaking right release permission notification receiving unit receives the speaking right release permission notification. 3. .

[4] A speaking right release notification receiving unit for receiving a speaking right release notification indicating that the speaking right has been released from the wireless communication terminal to which the speaking right is granted, The server according to claim 1, wherein, when the speaking right release notification receiving unit receives the speaking right release notification, the speaking right granting unit grants the speaking right to the midway participating terminal.

[5] A predetermined time after the floor granting unit grants the floor to the midway participation terminal, the floor release unit releases the floor right granted to the midway participation terminal,

When the speaking right release unit releases the speaking right assigned to the midway participation terminal, the speaking right granting unit grants the speaking right when the midway participation notification receiving unit receives the midway participation notification. 2. The server according to claim 1, wherein the right to speak is granted to the wireless communication terminal.

[6] A wireless communication terminal to which a server has a right to speak, which is a right to transmit call data, in a group call executed by a half-duplex communication method between a plurality of wireless communication terminals,

During the group call, a wireless communication terminal that has not participated in the group call receives the halfway participation notification indicating that the wireless communication terminal joins the duplex call halfway.

When the mid-participation notification receiving unit receives the mid-participation notification from the server, the floor-right release notification is transmitted to the server to transmit a floor-right release notification to release the floor right granted by the server. A wireless communication terminal.

[7] The mid-participation notification receiving unit, further comprising: an operation unit that receives a floor request operation for requesting the server to grant the floor and a floor release operation for releasing the floor that has been granted When the mid-participation notification is received from the server, the speaking right release notification transmitting unit transmits the speaking right release notification to the server even if the operation unit does not accept the speaking right releasing operation. The wireless communication terminal according to claim 6, wherein:

[8] For a group call executed by a half-duplex communication method between a plurality of wireless communication terminals, a wireless communication provided by the server with the right to speak is the right to transmit call data. A communication terminal,

A mid-participation notification receiving unit for receiving a mid-participation notification that a wireless communication terminal that has not participated in the group call participates in the mid-call during the group call;

A wireless communication terminal that releases the assigned floor when receiving the midway participation notification.