WO2016104622A1 - 網間接続制御装置、及び接続制御方法 - Google Patents
網間接続制御装置、及び接続制御方法 Download PDFInfo
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- WO2016104622A1 WO2016104622A1 PCT/JP2015/086055 JP2015086055W WO2016104622A1 WO 2016104622 A1 WO2016104622 A1 WO 2016104622A1 JP 2015086055 W JP2015086055 W JP 2015086055W WO 2016104622 A1 WO2016104622 A1 WO 2016104622A1
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- request signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/66—Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/16—Multipoint routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/1016—IP multimedia subsystem [IMS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/10—Architectures or entities
- H04L65/102—Gateways
- H04L65/1033—Signalling gateways
- H04L65/1036—Signalling gateways at the edge
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1069—Session establishment or de-establishment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1101—Session protocols
- H04L65/1104—Session initiation protocol [SIP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
- H04M3/46—Arrangements for calling a number of substations in a predetermined sequence until an answer is obtained
- H04M3/465—Arrangements for simultaneously calling a number of substations until an answer is obtained
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2207/00—Type of exchange or network, i.e. telephonic medium, in which the telephonic communication takes place
- H04M2207/18—Type of exchange or network, i.e. telephonic medium, in which the telephonic communication takes place wireless networks
- H04M2207/185—Type of exchange or network, i.e. telephonic medium, in which the telephonic communication takes place wireless networks wireless packet-switched
Definitions
- the present invention relates to an interconnection technology between communication networks.
- IMS IP Multimedia Subsystem
- a mobile communication provider constructs an IP-based network (core network) by IMS and provides a mobile communication service to a user via an access network such as LTE / 3G. Yes. Further, communication between users who subscribe to different operators is enabled by IP interconnection (hereinafter referred to as “interconnection”) between networks.
- IP interconnection hereinafter referred to as “interconnection”
- a SIP (Session Initiation Protocol) network such as an IMS network
- devices in the network may support a forking service that branches received requests and sends them to multiple destinations. is there.
- a forking model forking model
- CAT Customerized Alerting Tones
- the CAT-AS establishes an early dialog between the incoming and outgoing UEs by transmitting a connection request signal by forking to one or a plurality of terminating UEs (user devices), and CAT- An early dialog is established between the AS and the originating UE, and early media is transmitted to the originating UE in the dialog.
- the early media is stopped.
- early media refers to establishing a media path with a provisional response before the caller UE sends a connection request and the callee UE finally responds.
- the service provider provides a ringback tone. Or when providing announcements.
- the carrier A network that is the carrier A network, the carrier B network that is the carrier B network, and the carrier C network that is the carrier C network are interconnected. ing.
- FIG. 1 is a diagram that pays particular attention to the carrier A network, and shows an inter-network connection control device 10 provided at the boundary part of the carrier A network.
- An inter-connection control device may be provided.
- the conventional inter-network connection control device 10 basically performs an operation of transferring a signal (request, response) received from a certain network to another network. That is, when a plurality of signals are received from a certain network, the plurality of signals are transferred to another network.
- the operator A network and the operator C network are IMS networks and support the above forking.
- the carrier B network is a non-IMS network and does not support forking.
- the carrier B network is an IP Centrex network for the inside of the carrier B.
- “forking is supported” means that, for example, the CAT forking model defined in Non-Patent Document 2 is supported. However, even if the CAT forking model defined in Non-Patent Document 2 is not supported, forking related to other services may be supported. In some cases, a gateway model other than the CAT forking defined in Non-Patent Document 2 is supported.
- the carrier B network does not support any forking. Since forking returns a plurality of response signals for one connection request signal, in order to perform forking, a plurality of early dialogs based on one connection request signal are used in a device in the network.
- a function for performing forking such as managing
- the operator C network is provided with a branch service device 20 including a function of transmitting a connection request signal by forking.
- the branch service device 20 is, for example, a CAT-AS.
- connection request signal including the user C representative number as a destination is generated.
- the connection request signal is transmitted to the branch service device 20 via the network connection control device 10 (step 1).
- the branch service apparatus 20 transmits a connection request signal to the UE-C1 to C3 corresponding to the user C representative number (steps 2 to 4).
- response signals eg, provisional response signals
- the carrier A network can cope with a plurality of response signals for one connection request signal, and can perform the forking operation normally. it can.
- a call is made from user B (UE-B) who is a subscriber of operator B who does not support forking to users C1, C2 and C3 which are subscribers of operator C.
- UE-B user B
- C1, C2 and C3 which are subscribers of operator C.
- connection request signal including the user C representative number as a destination is transmitted, and the connection request signal is transmitted via the network connection control device 10. It is transferred to the branch service device 20 (step 1).
- the branch service apparatus 20 transmits a connection request signal to the UE-C1 to C3 corresponding to the user C representative number (steps 2 to 4).
- response signals (eg, provisional response signals) are returned from the UE-C1 to C3, and the response signals from the UEs are transferred from the branch service device 20 to the inter-network connection control device 10 to be connected to the inter-network connection control device 10 Transmits each response signal to UE-B (lines indicated by C1, C2, and C3 in FIG. 2).
- the operator B network does not support forking, the operator B network cannot perform an appropriate operation, the response signal does not reach the UE-B properly, and the early dialog is not established.
- the branch service device 20 is a device that provides a CAT media service
- the business operator B that does not support forking cannot determine which dialog should be connected, and there is a possibility of erroneous connection.
- forking is supported in a network that relays signals
- the above-described erroneous connection may occur even when a source terminal (UE) connected to the network does not support forking There is sex.
- the “communication network” in the following description of the purpose is used in a broad sense including a network that relays signals and the terminal.
- the present invention has been made in view of the above points.
- communication related to forking between a communication network that supports forking and a communication network that does not support forking. It is an object to provide a technology that makes it possible to appropriately perform the above.
- an inter-network connection control device used for interconnecting a communication network and another communication network, A request signal transfer unit that transfers a connection request signal transmitted from a source user device in the communication network to the other communication network; A plurality of response signals for the connection request signal branched from the other communication network that has received the connection request signal and transferred to a plurality of destination user devices are received from the other communication network, and 1 in the plurality of response signals is received.
- an inter-network connection control device comprising: a response signal processing unit that transfers one response signal to the source user device.
- connection control method executed by an inter-network connection control device used for interconnecting a certain communication network and another communication network, A request signal transfer step of transferring a connection request signal transmitted from a source user device in the communication network to the other communication network; A plurality of response signals for the connection request signal branched from the other communication network that has received the connection request signal and transferred to a plurality of destination user devices are received from the other communication network, and 1 in the plurality of response signals is received.
- connection control method comprising: a response signal processing step of transferring one response signal to the source user device.
- communication including an inter-network connection control device used for interconnecting a certain communication network and another communication network, and a branch service device provided in the other communication network.
- a connection control method executed in a system comprising: The network connection control device transferring a connection request signal transmitted from a source user device in the communication network to the branch service device in the other communication network; The branch service device that has received the connection request signal branches the connection request signal, forwards the connection request signal to a plurality of destination user devices, and receives a plurality of response signals for the connection request signals from the plurality of destination user devices. And transmitting to the network connection control device;
- a connection control method comprising: the network connection control device receiving the plurality of response signals from the branch service device and transferring one response signal in the plurality of response signals to the source user device. Is done.
- FIG. 1 is an overall configuration diagram of a system in an embodiment of the present invention.
- 3 is a functional configuration diagram of the network connection control device 100.
- FIG. It is a figure which shows the example of the hardware constitutions of the network connection control apparatus. It is a figure which shows the connection sequence example 1.
- FIG. It is a figure which shows the example 2 of a connection sequence. It is a figure which shows the example 3 of a connection sequence.
- each carrier network described below is a core network of a mobile communication carrier, but the present invention is not limited to the case where the carrier network is a core network of a mobile communication carrier. is there.
- FIG. 3 is a diagram for explaining a configuration example of an IP interconnection network (hereinafter referred to as an interconnection network) in the present embodiment.
- the network configuration shown here is the same as the configuration shown in FIGS. 1 and 2 as the connection configuration between the operator networks.
- Each provider network is a communication network in which session control is performed by SIP (Session Initiation Protocol).
- FIG. 3 is a diagram that pays particular attention to the carrier A network, and shows an inter-network connection control device 100 provided at the boundary part of the carrier A network.
- An inter-connection control device may be provided.
- the network connection control apparatus 100 in the present embodiment is an apparatus including, for example, an IBCF (Interconnection Border Control Function) and / or TrGW (Transition Gateway) function in IMS.
- IBCF Interconnection Border Control Function
- TrGW Transition Gateway
- the operator A network and the operator C network are IMS networks, and support forking.
- the carrier B network is a non-IMS network and does not support forking.
- the carrier B network is an IP Centrex network for the inside of the carrier B.
- supporting forking means, for example, supporting the CAT forking model defined in Non-Patent Document 2. However, even if the CAT forking model defined in Non-Patent Document 2 is not supported, forking related to other services may be supported.
- the carrier B network does not support any forking.
- the “operator B network” is interpreted as a network including a source terminal (UE), a network that relays a signal supports forking, and is a source network connected to the network.
- UE source terminal
- the case where the terminal does not support forking is also included in the case where “the operator B network does not support forking”.
- a device for performing session control by SIP is provided. Signals are transmitted and received through the device.
- the device is a device having a function of S-CSCF (Serving-Call Session Control Function) in the IMS network.
- S-CSCF Server-Call Session Control Function
- the carrier C network is provided with a branch service device 200 including a function of branching and transmitting a connection request signal by forking.
- the branch service device 200 is, for example, a CAT-AS that supports the forking model described in Non-Patent Document 2.
- the service using forking that can be provided by the branch service apparatus 200 is not limited to the forking model of CAT media transmission, and other services can also be provided.
- another service there is a service in which a representative number connection is performed by transferring an RBT (ringback tone) from the terminating UE without performing early media transmission from the branch service apparatus 200.
- FIG. 4 shows a functional configuration diagram of the network connection control apparatus 100 according to the present embodiment.
- the network connection control apparatus 100 includes a request signal transfer unit 101 and a response signal processing unit 102.
- FIG. 4 shows only the functional units particularly related to the embodiment of the present invention in the network connection control device 100, and also has a function (not shown) for performing an operation of connecting between the operator networks. It is.
- the functional configuration shown in FIG. 4 is only an example. As long as the operation according to the present embodiment can be performed, the function classification and the name of the function unit may be anything.
- the request signal transfer unit 101 is a connection request transmitted from a UE (user device) and transferred by a device (eg, S-CSCF in an IMS network) that performs SIP session control in the carrier A network / carrier B network.
- a device eg, S-CSCF in an IMS network
- a function of receiving a signal and transferring the connection request signal to another network (the operator C network in the present embodiment) according to the destination of the connection request signal is included.
- the request signal transfer unit 101 may include a function of converting a SIP message, for example, in order to absorb differences in SIP messages between operator networks.
- the response signal processing unit 102 transmits a plurality of response signals (for example, provisional responses) transferred from the operator C network to the operator A network / the operator B network due to transmission of the connection request signal by forking. Signal), selecting one response signal from the plurality of response signals and transferring it to the UE that is the source of the connection request signal.
- a plurality of response signals for example, provisional responses
- the number of response signals to be selected is not limited to one, and some of the plurality of response signals received may be selected and transferred.
- the request signal transfer unit 101 is not limited to performing transmission / reception of request signals in SIP, and may perform transmission / reception of response signals.
- the request signal transfer unit 101 may further include a function of transmitting and receiving media data such as voice and video.
- the response signal processing unit 102 is not limited to performing transmission / reception of response signals in SIP, and may perform transmission / reception of request signals.
- the response signal processing unit 102 may further include a function for transmitting and receiving media data such as voice and video.
- the network connection control apparatus 100 can be realized, for example, by causing one or a plurality of computers (servers) to execute a program describing the processing contents described in the present embodiment. That is, the function of the network connection control device 100 is to execute a program corresponding to the processing executed by the network connection control device 100 using hardware resources such as a CPU and a memory built in the computer. Can be realized. Further, the program can be recorded on a computer-readable recording medium (portable memory or the like), stored, or distributed. It is also possible to provide the program through a network such as the Internet or electronic mail.
- FIG. 5 shows an example of the hardware configuration of the network connection control apparatus 100 when the network connection control apparatus 100 is configured by the computer as described above.
- the inter-network connection control device 100 includes a CPU 151, a RAM (Random Access Memory) 152, a ROM (Read Only Memory) 153, a communication module 154 for performing communication, and an auxiliary storage device 155 such as a hard disk.
- the CPU 151 When the CPU 151 reads out and executes a program stored in a storage unit such as the RAM 152, the ROM 153, and the auxiliary storage device 155, the operation of each function of the request signal transfer unit 101 and the response signal processing unit 102 is executed.
- the communication module 154 is used for processing for performing network communication in the processing in the function units of the request signal transfer unit 101 and the response signal processing unit 102.
- the input device 156 can input setting information to the network connection control device 100, for example, and the output device 157 can output the operating state of the network connection control device 100, for example.
- connection sequence example 1 (System operation example) ⁇ Connection sequence example 1>
- UE-A the outgoing call from the carrier A network
- FIG. 6 (B) indicates that the same applies to transmission from the carrier B network.
- a connection request signal including the user C representative number as a destination is transmitted.
- the request signal transfer unit 101 in the inter-network connection control apparatus 100 receives the transferred connection request signal and transfers the connection request signal to the operator C network.
- the connection request signal is transferred to the branch service apparatus 200 (step 102).
- the branch service apparatus 200 transmits a connection request signal to the UE-C1 to C3 corresponding to the user C representative number by the forking function (steps 103 to 105).
- Each of the UE-C1 to C3 that has received the connection request signal transmits a response signal (in this example, a provisional response signal), and the provisional response signal is transferred to the branch service apparatus 200 (steps 106 and 108). 110).
- the branch service apparatus 200 that has received the provisional response signal from each UE transmits the provisional response signal of each UE, and the provisional response signal is transferred to the inter-network connection control apparatus 100 (steps 107, 109, and 111).
- the response signal processing unit 102 in the network connection control apparatus 100 receives three provisional response signals.
- the response signal processing unit 102 that receives the three provisional response signals selects one provisional response signal from the three provisional response signals, transmits the provisional response signal to UE-A, and UE-A
- the provisional response signal is received (step 112).
- the carrier A network is the source.
- the response signal processing unit 102 holds information on temporary response signals that have not been selected (for example, information for identifying a dialog, information on media, and the like).
- FIG. 6 shows that the inter-network connection control apparatus 100 transmits one provisional response signal to UE-A after receiving three provisional response signals, but this is for convenience of illustration. is there.
- the temporary response signal may be transmitted to UE-A immediately after receiving the first temporary response signal.
- UE-A outputs RBT based on the provisional response signal.
- the provisional response signal includes codec information of media and the like, and an acknowledgment response to the provisional response signal is returned to the branch service apparatus 200, so that the medium such as the announcement is transmitted from the branch service apparatus 200 to the UE-A. It is also good to do.
- the method by which the response signal processing unit 102 selects one provisional response signal from among the three provisional response signals is not limited to a specific method.
- the provisional response signal received first is selected and UE-A
- the provisional response signal received after receiving the first provisional response signal may not be transmitted to UE-A.
- the branch service apparatus 200 (or each UE) has identification information indicating that each provisional response signal is provisional response signal source UE identification information and provisional response signals for connection request signals received by forking.
- the response signal processing unit 102 receives a plurality of provisional response signals including these pieces of identification information, and the response signal processing unit 102 includes a plurality of provisional response signals for the connection request signal related to forking,
- a provisional response signal of a specific UE may be selected and transmitted.
- the specific UE can be set in advance in the response signal processing unit 102 as having the highest possibility of making a final response.
- a final response signal is transmitted from UE-C2 (step 113).
- the final response signal is transferred to the UE-A via the branch service device 200 and the network connection control device 100 (response signal processing unit 102) (steps 114 and 115). Accordingly, a call session is established between UE-A and UE-C2, and a call can be performed.
- the inter-network connection control device 100 transfers the final response signal transmitted from UE-C2 to UE-A as it is, A call session is established between UE-A and UE-C2.
- the response signal processing unit 102 of the network connection control apparatus 100 determines that the UE-C2 After receiving the final response signal transmitted from the UE, for example, a call switching instruction signal (for example: information for identifying the temporary response signal of the UE-C2 that is retained (for example, information for identifying a dialog (call)) is stored. UPDATE, re-Invite, and other signals) are sent to UE-A, so that UE-A switches from a call connection with UE-C1 to a call connection with UE-C2. Then, the final response signal transmitted from the UE-C2 may be transmitted to the UE-A. Note that this process is merely an example, and call connection with the UE-C 2 may be performed by another method.
- a call switching instruction signal for example: information for identifying the temporary response signal of the UE-C2 that is retained (for example, information for identifying a dialog (call)
- UPDATE, re-Invite, and other signals are sent to UE-A
- connection sequence example 2 As an operation example of the system according to the present embodiment, a connection sequence example 2 will be described with reference to FIG.
- processing contents differ depending on the transmission from the carrier A network that supports forking and the transmission from the carrier B network that does not support forking.
- the connection sequence example 1 In the case of transmission from the carrier B network that does not support forking, the connection sequence example 1 is the same.
- FIG. 7 shows a case of transmission from the carrier A network. In FIG. 7, the same step numbers are used for the same steps as in the connection sequence example 1, which will be briefly described.
- a connection request signal including the user C representative number as a destination is transmitted (step 101) and branched via the network connection control device 100. It is transferred to the service device 200 (step 102).
- the branch service apparatus 200 transmits a connection request signal to the UE-C1 to C3 corresponding to the user C representative number by the forking function (steps 103 to 105).
- the request signal transfer unit 101 of the inter-network connection control device 100 that has received the connection request signal in step 101 indicates that the connection request signal is a signal sent from a network that supports forking. Determine.
- the determination method is not limited to a specific method. For example, the determination is made from the address of the connection request signal transmission source. In this case, it is assumed that the request signal transfer unit 101 holds information indicating which address is a network address that supports forking.
- Each of the UEs C1 to C3 that has received the connection request signal transmits a provisional response signal, and the provisional response signal is transferred to the branch service apparatus 200 (steps 106, 108, and 110) and transferred to the inter-network connection control apparatus 100. (Steps 107, 109, and 111).
- the response signal processing unit 102 in the network connection control apparatus 100 receives three provisional response signals.
- the response signal processing unit 102 that receives the three provisional response signals identifies that each of the provisional response signals is a response to the connection request signal transmitted from the network that supports forking based on the determination result described above. As a result, the process of selecting one provisional response signal is not performed. Therefore, the response signal processing unit 102 transmits each provisional response signal to UE-A, and UE-A receives each provisional response signal (steps 112-1 to 112-3).
- a final response signal is transmitted from UE-C2 (step 113).
- the final response signal is transferred to the UE-A via the branch service device 200 and the network connection control device 100 (response signal processing unit 102) (steps 114 and 115). Accordingly, a call session is established between UE-A and UE-C2, and a call can be performed.
- connection sequence example 3 As an operation example of the system according to the present embodiment, a connection sequence example 3 will be described with reference to FIG. In connection sequence example 3, a more specific example will be described assuming that the branch service apparatus 200 is a CAT-AS that supports the CAT forking model defined in Non-Patent Document 2.
- connection sequence example 3 Similar to the connection sequence example 1, in the connection sequence example 3, the same processing is performed for outgoing calls from the carrier A network and outgoing calls from the carrier B network. A transmission from A) is shown. In FIG. 8, (B) indicates that the same applies to transmission from the carrier B network.
- specific signal names and dialog identification information D1, D2, etc. are described in parentheses in each signal. Further, in this example, it is assumed that each device including the UE has sufficient resources for processing a plurality of dialogs.
- connection request signal including the user C representative number as a destination is transmitted (step 201).
- the request signal transfer unit 101 in the inter-network connection control device 100 receives the transferred connection request signal (INVITE) and transfers the connection request signal (INVITE) to the operator C network.
- the connection request signal (INVITE) is transferred to the branch service device 200 (step 202).
- the branch service apparatus 200 transmits a connection request signal (INVITE) to the UE-C1 to C3 corresponding to the user C representative number by using the forking function (steps 203 to 205).
- a connection request signal ISVITE
- the UE-C1 that has received the connection request signal first transmits a provisional response signal (180, D2), and the provisional response signal (180, D2) is transferred to the branch service apparatus 200 (step 206).
- the branch service apparatus 200 that has received the provisional response signal (180, D2) from the UE-C1 transmits the provisional response signal (183, D1), and the provisional response signal (183, D1) is transmitted to the network connection control apparatus 100. (Step 207).
- the response signal processing unit 102 in the inter-network connection control apparatus 100 sends the provisional response signal (183, D1) to the UE.
- -Forward to A step 208
- UE-A to establish an early dialog
- receive confirmation signal (PRACK, D1) from UE-A step 209
- branch the confirmation signal (PRACK, D1) Transfer to device 200 (step 210).
- early media codec information is included in the provisional response signal (183, D1), and the UE-A that has received the provisional response signal (183, D1) can receive and decode the early media.
- the branch service apparatus 200 that has received the confirmation signal (PRACK, D1) starts transmission of early media to UE-A (step 211).
- the response signal processing unit 102 of the network connection control apparatus 100 receives the provisional response signal (183, D3) from the UE-C2 (steps 212 and 213), and receives the provisional response signal (183, D4) from the UE-C3.
- the provisional response signal (183, D1) since the provisional response signal (183, D1) has already been transferred to UE-A, the provisional response signal (183) received from UE-C2, C3 must be transferred to UE-A. Instead, the information is stored in a storage means such as a memory.
- a final response signal (200 OK, D2) is transmitted from UE-C1.
- the branch service apparatus 200 that has received the final response signal (200 OK, D2) stops transmission of the early media (step 217), and transfers the final response signal (200 OK, D2) to the network connection control apparatus 100.
- the network connection control apparatus 100 transfers the final response signal (200OK, D2) to the UE-A (Step 219).
- step 216 when the final response signal (200 OK) is transmitted from, for example, UE-C 2 instead of UE-C 1 (in the case of 200 OK and D 3), the branch service apparatus 200 that has received the final response signal 200 receives the early media.
- the transmission is stopped (step 217), and the final response signal (200OK, D3) is transferred to the network connection control apparatus 100 (step 218).
- the network connection control apparatus 100 transmits a dialog (call) to D2
- the final response signal (200 OK, D3) is transferred to UE-A (step 219). Accordingly, a call session is established between UE-A and UE-C2, and a call can be performed.
- an inter-network connection control device used for interconnecting a certain communication network and another communication network, which is transmitted from a source user device in the communication network.
- a request signal transfer unit that transfers the connection request signal to the other communication network, and a plurality of connection request signals that are branched in the other communication network that has received the connection request signal and transferred to a plurality of destination user devices.
- an inter-network connection control device including a response signal processing unit that receives a response signal from the other communication network and transfers one response signal of the plurality of response signals to the source user device.
- communication related to forking can be appropriately performed between a communication network that supports forking and a communication network that does not support forking. It becomes possible.
- the “communication network that does not support forking” here refers to the network that relays the signal supports forking, but the source terminal (included in the communication network) connected to the network performs forking. Including cases that do not support.
- the response signal processing unit transfers, for example, a response signal received first among a plurality of response signals received from the other communication network to the source user device.
- the response signal can be quickly transferred to the source user device with relatively simple control.
- the request signal transfer unit determines whether or not a forking service for branching and receiving a connection request signal is supported in the communication network that is a transmission source of the connection request signal.
- the response signal processing unit may transfer the plurality of response signals to the source user device.
- the response signal may be a provisional response signal
- the response signal processing unit may transfer the provisional response signal to the source user device so that the source user device establishes an early dialog.
- the response signal processing unit transfers the one response signal to the source user device, and then transmits a final response signal transmitted from a destination user device other than the destination user device corresponding to the response signal to the other communication
- the final response signal may be transmitted to the source user device after transmitting a signal for instructing call switching to the source user device.
- each of the communication networks is a communication network in which session control by SIP is performed, and the inter-network connection control device is provided at a boundary portion of the communication network.
- the present invention can be effectively applied to, for example, an IMS network and other SIP networks.
- the operations of a plurality of functional units may be physically performed by one component, or the operations of one functional unit may be physically performed by a plurality of components.
- the network connection control apparatus 100 has been described using a functional block diagram, but the network connection control apparatus 100 may be implemented by hardware, software, or a combination thereof.
- Software operated by the processor of the network connection control device 100 according to the embodiment of the present invention includes random access memory (RAM), flash memory, read only memory (ROM), EPROM, EEPROM, register, hard disk (HDD),
- the program may be stored in a removable disk, a CD-ROM, a database, a server, or any other appropriate storage medium.
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Abstract
Description
前記通信網における発信元ユーザ装置から送信された接続要求信号を前記他通信網に転送する要求信号転送部と、
前記接続要求信号を受信した前記他通信網において分岐され、複数の着信先ユーザ装置に転送された当該接続要求信号に対する複数の応答信号を当該他通信網から受信し、当該複数の応答信号における1つの応答信号を前記発信元ユーザ装置に転送する応答信号処理部と
を備える網間接続制御装置が提供される。
前記通信網における発信元ユーザ装置から送信された接続要求信号を前記他通信網に転送する要求信号転送ステップと、
前記接続要求信号を受信した前記他通信網において分岐され、複数の着信先ユーザ装置に転送された当該接続要求信号に対する複数の応答信号を当該他通信網から受信し、当該複数の応答信号における1つの応答信号を前記発信元ユーザ装置に転送する応答信号処理ステップと
を備える接続制御方法が提供される。
前記網間接続制御装置が、前記通信網における発信元ユーザ装置から送信された接続要求信号を前記他通信網における前記分岐サービス装置に転送するステップと、
前記接続要求信号を受信した前記分岐サービス装置が、当該接続要求信号を分岐し、複数の着信先ユーザ装置に転送し、当該接続要求信号に対する複数の応答信号を当該複数の着信先ユーザ装置から受信し、前記網間接続制御装置に送信するステップと、
前記網間接続制御装置が、前記複数の応答信号を前記分岐サービス装置から受信し、当該複数の応答信号における1つの応答信号を前記発信元ユーザ装置に転送するステップと
を備える接続制御方法が提供される。
図3は、本実施の形態におけるIP相互接続網(以下、相互接続網と呼ぶ)の構成例を説明するための図である。ここに示す網構成は、事業者網間の接続構成としては図1、図2に示した構成と同様である。
次に、上記システムにおける網間接続制御装置100の構成例を説明する。図4に、本実施の形態における網間接続制御装置100の機能構成図を示す。図4に示すように、網間接続制御装置100は、要求信号転送部101、応答信号処理部102を含む。
<接続シーケンス例1>
次に、本実施の形態に係るシステムの動作例として、図6を参照して接続シーケンス例1を説明する。接続シーケンス例1では、事業者A網からの発信と、事業者B網からの発信とで同じ処理内容となることから、例として、事業者A網(UE-A)からの発信を示している。図6では、事業者B網からの発信でも同様であることを(B)として示している。
次に、本実施の形態に係るシステムの動作例として、図7を参照して接続シーケンス例2を説明する。接続シーケンス例2では、フォーキングをサポートする事業者A網からの発信と、フォーキングをサポートしない事業者B網からの発信とで異なる処理内容となる。フォーキングをサポートしない事業者B網からの発信の場合は、接続シーケンス例1と同じである。図7は、事業者A網からの発信の場合を示している。図7において、接続シーケンス例1と同様のステップについては同じステップ番号を使用しており、それについては簡潔に説明する。
次に、本実施の形態に係るシステムの動作例として、図8を参照して接続シーケンス例3を説明する。接続シーケンス例3では、分岐サービス装置200が、非特許文献2で規定されているCATフォーキングモデルをサポートするCAT-ASであることを想定して、より具体的な例について説明する。
20、200 分岐サービス装置
101 要求信号転送部
102 応答信号処理部
151 CPU
152 RAM
153 ROM
154 通信モジュール
155 補助記憶装置
156 入力装置
157 出力装置
Claims (8)
- ある通信網と他通信網とを相互接続するために使用される網間接続制御装置であって、
前記通信網における発信元ユーザ装置から送信された接続要求信号を前記他通信網に転送する要求信号転送部と、
前記接続要求信号を受信した前記他通信網において分岐され、複数の着信先ユーザ装置に転送された当該接続要求信号に対する複数の応答信号を当該他通信網から受信し、当該複数の応答信号における1つの応答信号を前記発信元ユーザ装置に転送する応答信号処理部と
を備える網間接続制御装置。 - 前記応答信号処理部は、前記他通信網から受信する複数の応答信号のうち、最初に受信した応答信号を前記発信元ユーザ装置に転送する
請求項1に記載の網間接続制御装置。 - 前記要求信号転送部は、前記接続要求信号の発信元である前記通信網において、接続要求信号を分岐させて着信させるフォーキングサービスがサポートされているか否かを判定し、前記通信網において当該フォーキングサービスがサポートされている場合に、前記応答信号処理部は、前記複数の応答信号を前記発信元ユーザ装置に転送する
請求項1又は2に記載の網間接続制御装置。 - 前記応答信号は暫定応答信号であり、前記応答信号処理部が当該暫定応答信号を前記発信元ユーザ装置に転送することにより、当該発信元ユーザ装置にアーリーダイアログを確立させる
請求項1ないし3のうちいずれか1項に記載の網間接続制御装置。 - 前記応答信号処理部は、前記1つの応答信号を前記発信元ユーザ装置に転送した後、当該応答信号に対応する着信先ユーザ装置以外の着信先ユーザ装置から送信された最終応答信号を前記他通信網から受信した場合に、前記発信元ユーザ装置に対して呼の切り替えを指示する信号を送信した後に、前記最終応答信号を前記発信元ユーザ装置に送信する
請求項1ないし4のうちいずれか1項に記載の網間接続制御装置。 - 前記各通信網は、SIPによるセッション制御が行われる通信網であり、前記網間接続制御装置は、通信網の境界部分に備えられる
請求項1ないし5のうちいずれか1項に記載の網間接続制御装置。 - ある通信網と他通信網とを相互接続するために使用される網間接続制御装置が実行する接続制御方法であって、
前記通信網における発信元ユーザ装置から送信された接続要求信号を前記他通信網に転送する要求信号転送ステップと、
前記接続要求信号を受信した前記他通信網において分岐され、複数の着信先ユーザ装置に転送された当該接続要求信号に対する複数の応答信号を当該他通信網から受信し、当該複数の応答信号における1つの応答信号を前記発信元ユーザ装置に転送する応答信号処理ステップと
を備える接続制御方法。 - ある通信網と他通信網とを相互接続するために使用される網間接続制御装置と、前記他通信網に備えられる分岐サービス装置とを含む通信システムにおいて実行される接続制御方法であって、
前記網間接続制御装置が、前記通信網における発信元ユーザ装置から送信された接続要求信号を前記他通信網における前記分岐サービス装置に転送するステップと、
前記接続要求信号を受信した前記分岐サービス装置が、当該接続要求信号を分岐し、複数の着信先ユーザ装置に転送し、当該接続要求信号に対する複数の応答信号を当該複数の着信先ユーザ装置から受信し、前記網間接続制御装置に送信するステップと、
前記網間接続制御装置が、前記複数の応答信号を前記分岐サービス装置から受信し、当該複数の応答信号における1つの応答信号を前記発信元ユーザ装置に転送するステップと
を備える接続制御方法。
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11355358A (ja) * | 1998-06-11 | 1999-12-24 | Fujitsu Ltd | ゲートウェイ装置、ゲートウェイ装置の端末特定方法及び端末特定プログラムを記録したコンピュータ読み取り可能な記録媒体 |
US20130246632A1 (en) * | 2012-03-16 | 2013-09-19 | Qualcomm Incorporated | Managing early media for communication sessions establishing via the session initiation protocol (sip) |
US20130304930A1 (en) * | 2012-05-14 | 2013-11-14 | Nokia Siemens Networks Oy | Forking interworking |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103874240B (zh) * | 2012-12-11 | 2018-09-11 | 中兴通讯股份有限公司 | 一种信令发起方法、装置及网关设备 |
US9277522B2 (en) * | 2013-08-21 | 2016-03-01 | Qualcomm Incorporated | Exchanging rich communication suite capability information in a communications system |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11355358A (ja) * | 1998-06-11 | 1999-12-24 | Fujitsu Ltd | ゲートウェイ装置、ゲートウェイ装置の端末特定方法及び端末特定プログラムを記録したコンピュータ読み取り可能な記録媒体 |
US20130246632A1 (en) * | 2012-03-16 | 2013-09-19 | Qualcomm Incorporated | Managing early media for communication sessions establishing via the session initiation protocol (sip) |
US20130304930A1 (en) * | 2012-05-14 | 2013-11-14 | Nokia Siemens Networks Oy | Forking interworking |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019198682A1 (ja) * | 2018-04-12 | 2019-10-17 | 日本電信電話株式会社 | Sipプロキシサーバ、通信方法およびsipプロキシプログラム |
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