KR20030027916A - The Voice Ring Back Tone in GSM Network using CAMEL for Intelligent Network - Google Patents

Abstract

PURPOSE: A method of controlling registration and delivery of a call connected sound service by an intelligent network in a mobile communication network using a CAMEL(Customized Applications for Mobile network Enhanced Logic) is provided to transmit information to an IP(Intelligent Peripheral) and an MSS(Multi Ring Back Tone Service Server) from an SCP(Service Control Point) by using a message ID, and to retrieve information on subscribers and extract a sound source, thereby supplying an efficient service. CONSTITUTION: A setup message is transmitted to an SSP(Service Switching Point)(S501). When the SSP transmits an 'InitialDP' to an SCP(S502), the SCP responds to an ETC message including routing information in the SSP(S503). The SSP requests a connection with an IP(S504,S505). The IP transmits an ARI message to the SCP(S506). The SCP transmits a PA message to the IP(S508). The IP delivers an announcement for setting or changing a sound source, or receives information from a user(S509). The SSP receives a 'Release' message(S510). The SSP transmits an 'EvtRptBSCM' message to the SCP(S511), and responds to a DFC message(S512). The SSP performs a cancellation procedure with the IP(S513,S514). The IP transmits collected information to an MSS(S515). The MSS transmits billing data to a billing server(S516). Information on the set or the changed sound source is transmitted to the MSS(S518). Billing data on the set or the changed sound source is transmitted to the billing server(S519).

Description

Method of registration and transmission control of ring back tone service by intelligent network in mobile communication network using CAMEL {The Voice Ring Back Tone in GSM Network using CAMEL for Intelligent Network}

The ring back tone service that plays music or various sounds instead of the existing ring back tone currently provided in the mobile communication network connects and rings the ring back tone server at the mobile exchange by WIN (Wireless Intelligent Network), an intelligent network protocol applied in North America. Controlling the service that exports music from the backtone server or controlling the connection to the ringbacktone server within the mobile exchange is used. In this case, the service may be applied when using CAMEL, an intelligent network protocol applied in the European way. none. In the case of CAMEL, if the contents of the recommendation are used as they are, the ring tone service cannot be provided smoothly.

In the method for controlling connection connection and release between the switching system and the sound source transmitting device, the ring back tone service currently provided by the mobile communication provider is provided in the form of an additional service provided by the exchange. This means that access control to IP, which is a sound source transmission neglect, and call connection control to a called subscriber are controlled by a program in the exchange. In addition, even when using WIN, a North American-style intelligent network protocol, operations for transmitting and controlling information between network elements are not provided to simultaneously perform IP access control and incoming call control.

In service control, when a service is controlled by an intelligent network, SCP, a service control device, controls all services. In this case, if there are many operations between SCP and IP and communication with the internet such as web or swap, separate protocol should be used. In case of operation between SCP and IP, INAP, which is an intelligent network protocol defined by wired communication network, provides a way to control IP with some service logic such as ScripRun, but in the case of CAMEL, such operation is prescribed. Can not be used because it is not.

The present invention is a method for providing a ring back tone service in a European mobile communication network using a CAMEL intelligent network protocol, a method for controlling connection and disconnection between an SSP, which is an exchange system by intelligent network protocol control, and an IP, which is a sound source transmission device, and an SSP. Service subscriber registration and release, call connection sound transmission control and billing record generation method and the like.

Control of the intelligent network service is usually performed in the SCP, but in the present invention, in consideration of interworking by wired or wireless Internet, the SCP performs registration and release control and information management on the subscribers of the service, and also starts the ring back tone service. And end control, and control of the sound source transmission and management of the sound source are handled by the method performed by the IP and the MSS.

In addition, to deliver information for service from SCP to IP and MSS, the message ID is used to process the information, and IP and MSS can use this to perform information retrieval and sound source search for service subscribers to provide more efficient services. Make sure

1 shows a network configuration for processing in accordance with the present invention.

FIG. 2 is a diagram of O_BCSM showing a state diagram for an outgoing signal proposed in a conventional CAMEL Phase 4 according to the present invention. FIG.

FIG. 3 is a diagram for T_BCSM showing a state diagram for an incoming signal in a conventional CAMEL Phase 4 according to the present invention. FIG.

4 is a diagram illustrating a procedure for service subscription and release using an intelligent network operation recommended in CAMEL Phase 4 in the present invention.

5 is a diagram illustrating a procedure for setting or changing a sound source for a ring back tone using an intelligent network operation recommended in CAMEL Phase 4 in the present invention.

FIG. 6 is a diagram illustrating a connection procedure for transmitting a ring back tone at an outgoing subscriber side using an intelligent network operation recommended in CAMEL Phase 4 in the present invention. FIG.

7 is a diagram illustrating a connection procedure for transmitting a ring back tone from a called party using an intelligent network operation recommended in CAMEL Phase 4 in the present invention.

※ Explanation of codes for main parts of drawing

100: MSC (Mobile Switching Center)

200: SCP (Service Control Point)

300: HLR (Home Location Register)

400: SMP (Service Management Point)

500: AUC (Authentication Center)

600: Billing Server

700: CP / WAP / WEB Server

800: MSS (Multi Ring Back Tone Service Server)

900: IP (Intelligent Peripheral)

In the ring tone service, the caller hears the ringback tone while the call is established and the ring is ringing while the caller attempts to call the called party. In this process, the ringback tone is replaced with a sound suitable for the personality of the caller or the called party for more diverse services. The service allows users to select and listen to music for each user.

The present invention relates to a method for providing a conventional ring back tone service by CAMEL, an intelligent network protocol used in GSM, a European mobile communication network standard, which is used in many standard standards worldwide, and to provide the functions described in the present invention. Network elements and network diagrams for this are described in detail in FIG. As shown in Figure 1, the network elements for the present technology include MSC / SSP (100: Mobile Switching Center / Service Switching Point), SCP (200: Service Control Point), HLR (300: Home Location Register), SMP (400: Service Management Point), AUC (500: Authentication Center), Billing Server (600), CP / WAP / WEB Server (Contents Provider) (700), MRBT Service Server (800) and Intelligent Peripheral (IP). The MSC / SSP recognizes that the originating or receiving subscriber is the target subscriber of the present invention when the service user attempts to make a call, notifies the SCP to request the service control, and also connects an IP for sending a call connection. Do this. The HLR has information on mobile subscribers, and holds information that is subject to the present invention for each subscriber. SCP includes the information of subscribers and the logic for performing the service of the subject of the present invention. When the service control request is received from the MSC / SSP, the SCP is controlled to control the IP access for transmitting the ring back tone and the sound transmission from the IP and the MSS. Providing information for the project.

2 and 3 show a basic call state machine (BCSM) for the basic call processing state recommended in CAMEL Phase 4, with O_BCSM showing the state of the originating basic call and T_BCSM showing the state of the incoming call. In the process of basic call processing, instead of using the resources inside the exchange to access the ringback tone, the external device, IP, should be connected to send ringback tone replacement sound. Since the ringback tone is transmitted from BCSM in the state of Alerting, which is the call path between the caller and the called party, the initial InitialDP message to SCP is transmitted by O_Term_Seized DP in O_BCSM and Call_Accepted DP in T_BCSM.

In service registration and release, when a service user inputs a specific number such as 700-1234, SCP recognizes and controls and accesses the IP device controlling the service and performs the process for service registration and release. 4 shows a procedure in which a subscriber registers or releases a service for the present technology. First, when the service user presses the call key together with the called number for service registration and release, the setup message is transmitted to the exchange (S401), and the exchange SSP receives this message and retrieves the trigger Criteria for the received information. If the InitialDP is sent to the SCP (S402), the SCP analyzes the ServiceKey and incoming information from the InitialDP and recognizes that it is a request for the registration and release processing for this service, and then exchanges the ETC including routing information to the IP for service registration and release. Answer (S403). The exchange receiving the ETC requests a connection to the corresponding IP (S404 and S405), and the IP is sent to the SCP by sending an ARI to the SCP (S406), thereby establishing a connection between the SCP and the IP for service control. In this state, SCP sends a PA (S407) for IP control to IP. In general, MessageID included in PA means information for voice transmission, but in this case, means a subscriber number indicating a service user. The broadcast announcement for the service registration or release procedure is transmitted or necessary information is received from the user (S408). When the procedure for registering or releasing service is completed, the service user presses the end key for call disconnection and the exchange receives the release (S409). The exchange receiving the release transmits the EvtRptBSCM message from the O_Abandon DP to the SCP (S410), and if the DFC responds to the DFC for the IP release of the SCP to the exchange (S411), the exchange receives the release procedure with the IP (S412). , S413). When the release procedure is completed by a call with the exchange, the IP transmits the collected information to the MSS for service registration or release (S414), and the MSS passes the authentication procedure for the subscriber (S415, S416) to the HLR and SCP. After performing the registration or release procedure for the user (S417, S418), the processing result is transmitted to the subscriber through the short message (S419).

The procedure for setting or changing the ringback tone replacement tone in the state where the subscriber is registered in the service is shown in FIG. In this process, the service user enters a specific number, such as 700-4321, and registers and releases the service, and the SCP recognizes it and controls it. First, when the service user presses the call key together with the called number for service registration and release, the setup message is transmitted to the exchange (S501), and the exchange SSP receives this message and retrieves the trigger Criteria for the received information. When the InitialDP is sent from the SCP to the SCP (S502), the ETC analyzes the ServiceKey and the incoming information from the InitialDP to recognize the request for setting and changing the sound source for the service, and includes ETC including routing information to the IP for sound source setting and change. Respond to the exchange (S503). The exchange receiving the ETC requests a connection to the corresponding IP (S504 and S505), and the IP is sent to the SCP by sending an ARI to the SCP (S506), thereby establishing a connection between the SCP and the IP for service control. In this state, SCP sends PA (S508) for IP control to IP. In general, MessageID included in PA means information for voice transmission, but in this case, subscriber number indicating service user. The announcement broadcast for setting or changing the sound source is transmitted or necessary information is received from the user (S509). When the procedure for setting or changing the sound source is finished, the service user presses an end key for call disconnection and the exchange receives a release (S510). The exchange receiving the release transmits an EvtRptBSCM message from the O_Abandon DP to the SCP (S511), and if the DFC responds to the DFC for the IP release of the SCP to the exchange (S512), the exchange receives the release procedure with the IP (S513). , S514). When the release procedure with the exchange is completed, the IP delivers the collected information to the MSS for setting or changing the sound source (S515), and the MSS generates billing data for setting or changing the sound source and transfers it to the Billing Server (S516). ). In addition, when a sound source setting or change occurs through a web or a swap server, information about the sound source is transmitted from the web or a swap server to the MSS (S518), and the MSS generates billing data for the sound source setting or change and sends it to the billing server. (S519).

6 shows a procedure to be processed when the service user is the calling subscriber. When the service user attempts to call (S601), the SSP, which is the switch, is armed from the Collected_Info DP to the TDP according to the service information about the subscriber and requests the initialDP to control the service (S602). Upon receiving the InitialDP, the SCP sends an RRBCSM operation for receiving a message from the O_Term_Seized DP where the called party establishes a call path and the O_Answer DP where the called party responds to the SSP switch (S603), and waits for the next state. The exchange requests the call connection to the exchange where the called party is located by the called party pressed by the subscriber (S604), and the corresponding exchange responds to the calling exchange after the incoming attempt (S605, S606). Upon receipt of the ANM from the destination exchange, the originating exchange sends an EvtRptBCSM to the SCP by arming the EDP in the O_Term_Seized DP at the request of the SCP to inform that the called subscriber has responded (S607). Upon receiving this, the SCP controls the SSP with a SplitLeg message for IP access to the calling party (S608), and the SSP notifies that the process is completed (S609). In this state, the leg connected to the calling party performs the IP access process (S612, S613, S614, S615), and the leg connected to the called party controls the process to continue monitoring the status of the called party. (S611). In the state where the IP and the calling subscriber's call path are connected, the IP receives the PA including the MessageID representing the subscriber information from the SCP (S616). The IP extracts the MessageID, analyzes the subscriber information therefrom, obtains the sound source information to be sent from the database, and sends the sound source to the calling subscriber (S617, S618, S619). When the called party picks up the receiver or presses the call key while the replacement tone of the ring back tone is transmitted, the completion message is transmitted to the calling exchange through the called exchange (S620 and S621). When the leg connected to the called party detects this and reports EvtRptBCSM to SCP from O_Answer DP, which is armed with EDP (S622), SCP controls the release between the calling leg and the IP (S623) to release between SSP and IP. The procedure proceeds (S624, S625). As soon as the release procedure between SSP and IP is completed, SCP moves the leg split into SSP to make one leg (S626, S627), and proceeds the call (S628) to make a call between the calling party and the called party. do. On the other hand, IP completes all processes for sound source transmission at the originating exchange by generating a charging record through the MSS when necessary after the sound source transmission to the calling party is completed (S631, S632).

Fig. 7 shows the procedure to be handled when the service user is the called subscriber. When any subscriber attempts to call the service user (S701), the SSP, which is the destination exchange that receives the relay call setup message (S702) from the originating exchange, is armed from the Terminating_Attempt_Authorized DP to the TDP according to the service information on the called party. InitialDP requests service control to the SCP (S703). Receiving the InitialDP, the SCP sends an RRBCSM operation for receiving a message to the SSP switch (S704) to receive a message from the Call_Accepted DP where the called party establishes a call path and the called party responds. In this state, when the called exchanger receives an alerting message from the called subscriber (S705), the Call_Accepted DP sends an EvtRptBCSM to the SCP, informing that the called subscriber has responded (S706). The SSP controls the SSP with a SplitLeg message for IP access to the calling party (S707), and the SSP notifies that the process is completed (S708). In addition, the originating exchange notifies that the called party has responded by sending an ANM message (S709, S710). On the other hand, to monitor the connection status of the called subscriber to the leg connected to the called subscriber to send a monitoring message (S711), and performs a process for IP access with the leg connected to the calling subscriber (S712, S713, S714, S715). . In the state where the IP and the calling subscriber's channel are connected, the IP receives the PA including the MessageID representing the subscriber information from the SCP (S716). The IP extracts the MessageID, analyzes the subscriber information therefrom, obtains sound source information to be sent from the database, and sends the sound source to the calling subscriber (S717, S718, S719).

If the called party picks up the receiver or presses the call key while the ring tone is being sent, the leg connected to the called party in the called exchange recognizes it and reports EvtRptBCSM to SCP from T_Answer DP, which is armed with EDP (S721). The SCP controls the release between the calling leg and the IP (S722), and the release procedure between the SSP and the IP is in progress (S723, S724). As soon as the release procedure between the SSP and IP is completed, SCP moves the leg split into SSP to make one leg (S725, S726), and proceeds the call (S727) to send an ACM message to the originating exchange, which sends the ACM message to the originating exchange. By transmitting to the calling party to establish a call path between the calling party and the called party (S728, S729, S730). On the other hand, IP completes all processes for sound source transmission at the originating exchange by generating a charging record through the MSS if necessary after the sound source transmission to the calling party is completed (S731, S732).

As described above, the present invention has described a network configuration method and a processing method between each network element for providing an alternate ring tone service in a mobile communication network using a CAMEL type intelligent network protocol.

As described above, the present invention has described the contents for the replacement sound for the ring back tone in the network recommended by GSM and 3GPP using CAMEL as an intelligent network protocol. It also includes procedures and procedures for registering and deleting subscribers' services and setting and changing sound sources using the CAMEL protocol. This also includes the content that is currently recommended in the context of the present invention and that some CAMEL standards should be more comprehensively accepted.

Therefore, the present invention will be able to provide services by applying to the Southeast Asia and Europe, etc. using the GSM method.

Claims (7)

A communication method using a method of providing a replacement ring tone through an IP device that provides a special resource in place of a ringback tone to a caller during a call connection process using a phase 4 of CAMEL, an intelligent network standard, in a European wireless communication network. At the stage of subscriber processing service registration and cancellation or setting and changing the sound source, A communication method in which a user initiates a process for accessing an IP for service registration and release or for setting and changing a sound source by arming a TDP according to a called number in a Collected_Info DP and passing an InitialDP to an SCP by pressing a specific called number. In the process of connecting IP to give the ring back tone, When the called subscriber is registered as a service user and connects the IP for sending the ring back tone at the called exchange, Terminating_Attempt_Authorised DP delivers the InitialDP to the SCP by arming the TDP according to the service information of the subscriber, and at the request of SCP, the EDP from the Call_Accepted DP. Initiating a process for transmitting a ring back tone by accessing an IP at an originating subscriber leg by splitting operation by arming the call; When the calling subscriber is registered as a service user and connects the IP for transmitting the ring back tone at the calling exchange, the Collected_Info DP armors the TDP according to the subscriber's service information and forwards the InitialDP to the SCP. Initiating a process for transmitting a ring back tone by connecting an IP at an originating subscriber leg by splitting operation by arming a call. SSP and resource processing device, which are exchangers, to give ringer to replace ring back tone and ringer to ringer during call connection process using Phase4 of CAMEL, an intelligent network standard applied in European wireless communication network. In connection process between IPs, Control method of applying state machine for CAMEL to handle SplitLeg operation in T_Alerting state when T-BCSM attempts incoming call to called subscriber when controlled by called exchange. In the network configuration method by providing load sharing and various services, SCP manages data to control subscribers for service and start of service, and has a separate device Multi-ringbacktone Service Server (MSS) to store and manage information for providing various services in IP device series How to configure the network to change the information through or change the information through the swap and directly use it for service control. An IP device for processing subscriber registration / deletion, sound source change, and sound source transmission, How to separate and configure each IP device, How to combine integrated IP devices into one by using the parameters used in the operation. In the method of transmitting control information from SCP to IP for service control, Message ID included in PlayAnnouncement operation used between SCP and IP means number to designate specific announcement to be sent, but it is recognized as service function code and subscriber number, and function code is used to register / delete subscriber function. A method that delivers meaning to provide various services in MSS by configuring and using it to be divided into sound source change and sound source transmission.