KR20090014708A - A method and system for providing voip[webphone]service over internet tightly combined with mobile network - Google Patents

Abstract

A system and a method for providing a VoIP service combined with a mobile network are provided to supply the same basic call service, SMS service and MMS service as a circumstance that a user directly uses a mobile phone if a mobile terminal subscriber accesses any internet network by his PC. A web phone server(101) performs authentication of a web phone subscriber. The web phone server exchanges data with an existing mobile network(20) and performs charging. The web phone server routes an outgoing signal at the web phone(120) and controls incoming signal connection to the web phone. The web phone server routes an outgoing signal at the web phone and controls incoming signal connection to the web phone. The web phone server receives a service registering request of the web phone to register incoming conversion. The web phone server receives a short text message and a multimedia message transmitted to a mobile phone of a web phone subscriber from a message storage server(290) to transmit the short text message and multimedia message to the web phone.

Description

System for providing Internet voice packet network service [Webphone] combined with mobile communication network and method of providing the service {A Method and System for providing VoIP [Webphone] Service over Internet tightly combined with Mobile Network}

1 is an overall communication system configuration to which the method according to the present invention is applied.

2 is a flowchart illustrating a procedure of registering / deactivating a web phone service according to an exemplary embodiment of the present invention.

3 is a flowchart illustrating a registration / deregistration procedure of another web phone service according to an exemplary embodiment of the present invention.

4 is a flowchart illustrating a processing procedure of an outgoing signal to be routed through a mobile communication network among outgoing signals in a web phone according to an embodiment of the present invention.

5 is a flowchart illustrating a procedure of processing an outgoing signal to be routed through an internet network among outgoing calls in a web phone according to an exemplary embodiment of the present invention.

6 is a flowchart illustrating an incoming call processing procedure to a web phone according to an embodiment of the present invention.

7 is a flowchart illustrating a procedure for transmitting a short message (SMS) and a multimedia message (MMS) in a web phone according to an embodiment of the present invention.

8 is a flowchart illustrating a procedure of receiving a short message (SMS) and a multimedia message (MMS) to a web phone according to an embodiment of the present invention.

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

10: web phone service system

101: web phone server 102: web phone gateway

110: Internet network

120: Web phone installed on PC

130: Generic external commercial VoIP gateway connected to the Internet

20: mobile network

200: mobile communication network switch (PCX)

210: BSC (Base Station Controller)

220: mobile network base station

230: cell phone

240: PX (PCX Gateway System)

250: STP / SG (Signaling Transfer Point / Signaling Gateway)

260: Home Location Register (HLR)

270: customer management server-server for billing and subscriber management, additional service registration management in mobile communication network

280: SMSC / MMSC (Short Message Service Center / Multimedia Message Service Center)

290: SMS / MMS message storage server

300: another domestic PSTN interworking with a mobile communication network

310: PSTN abroad

The present invention relates to a method of providing a same service as a mobile phone in an existing mobile communication network at a low rate by using a mobile communication network and a VoIP (Voice over IP) Internet network combined with a user to register a virtual mobile phone or web phone on a PC. It is about.

In particular, these services offer the advantage that office workers who normally work on a PC during the day can talk conveniently and hands-free without interrupting other work using a headset on the PC. If a resident is connected to the Internet, he / she can make incoming / outgoing calls at the same rate and number as in Korea, and can also send and receive text messages (SMS) and multimedia messages (MMS) in the same way as domestic rates. . In addition, it is possible to provide VoIP calls between subscribers registered as web phones directly without using a mobile communication network.

VoIP service is already provided by various companies, and one example service is Skype. However, in order to use such an existing Internet phone for the above purposes, a separate Internet phone destination phone number must be leased, and billing must be purchased or prepaid separately from an existing mobile phone, and also through this Internet phone. When calling, the other party has been inconvenient to reject the response because the calling number is displayed as an unfamiliar number. In addition, SMS and MMS has the inconvenience of accessing and sending a website through a different path, and has been inconvenient to subscribe to a separate additional service in order to check the SMS and MMS to their mobile phone with an Internet phone.

In order to solve the above inconvenience, Patent Application No. "10-2001-0010595" proposes a method of receiving subscriber authentication and charging at a switchboard of a mobile communication network by combining a call origination in the Internet network with a mobile communication network. When the caller ID was displayed, the number could be displayed on the existing mobile phone number, and it could not be particularly convenient except that the charging was performed at the exchange of the mobile communication network. In particular, billing is to generate a call detail record (CDR) directly from the server that handles Internet phone access and send it to the billing server so that the exchange performs the billing procedure to provide low call rates, one of the advantages of VoIP service. There have been drawbacks to this, and no method has been provided for the use of incoming services, SMS, or MMS.

In patent application number "10-2003-0007166", the disadvantage of the above patent was supplemented, and a method of registering and using a location in the HLR like the overseas roaming service when using the VoIP service was proposed, but this method is registered in the HLR as the VoIP roaming service. If the existing mobile phone terminal is operated and the location is registered, the new location registration is renewed by the HLR, and the incoming call comes back to the mobile phone. To continue the VoIP roaming service, the mobile phone is turned off and the service remains. There have been disadvantages to receive.

In order to solve the above problems, the present invention uses a call forwarding service, which is one of additional services provided in a mobile communication network, when a user logs on a web phone for using VoIP, without additional number resource waste. It allows network subscribers to receive VoIP Internet service using their mobile phone number, and also enables outgoing service without having to turn off the power to their mobile phone while providing VoIP Internet service from web phone. In the case of making a call using a VoIP Internet network service from a web phone, the web phone server providing the service does not route a call to the mobile communication network unconditionally to the target CS (Circuit Switched) network using the IP network at the lowest cost. Service method and system that can provide practical benefits to mobile subscriber by making access It is an object to provide.

In order to achieve the above object, the Internet VoIP service system and service providing method closely coupled with the mobile communication network according to the present invention use the mobile communication number of the mobile communication subscriber as MIN (Mobile Identification Number) as it is. In order to provide a communication service such as a mobile phone at low cost by using a web phone of a computer, the web phone subscriber authentication and Data exchange with existing mobile communication networks, billing, routing of outgoing calls from web phones, incoming call connection control to web phones, call forwarding registration processing to HLR upon request of web phone service registration, short message and multimedia sent to mobile phone of web phone subscriber The message is notified from the message storage server of the existing mobile communication network and sent to the web phone. The first step is to build a web phone server that handles the function of forwarding to the other phone, the proxy server function when connecting to other VoIP gateways to the other VoIP gateways, and the gatekeeper or location server function that manages the IP address of subscribers in internet VoIP communication. ; A second step of constructing a web phone gateway instructing a connection to the CS (Circuit Switched) network which is instructed by the routing in the web phone server; In order to switch / cancel the incoming call to the mobile phone when logging on / off from the web phone, the web phone server requests to register / cancel the call forwarding directly to the HLR using the MAP (Mobile Application Part) protocol or the existing mobile communication network. A third step of communicating with the customer management server to register (logon) / cancel (logoff) a web phone requesting the setting / cancellation of the call forwarding function; When the call is made through the registered web phone, the web phone server sees the number and routes it through the web phone gateway to the existing mobile communication network or, in the case of a specific number such as overseas, routes the VoIP call to another VoIP gateway through another internet network. A fourth step of processing a call call using a web phone after the call is completed, wherein the web phone server transmits the charging information to the customer management server of the existing mobile communication network; A fifth step in which an incoming call to a mobile phone number is simply transferred to a web phone by inquiring a Home Location Register (HLR) at an exchange when the registered web phone is used; When the short message or multimedia message is transmitted from the registered web phone, the web phone server sends the short message or multimedia message to the short message service center (SMSC) or the multimedia message sevice center (MMSC) using the MAP (Mobile Application Part) protocol. ; Send a short message or a multimedia message from an external mobile phone to the mobile phone of the web phone user.The message arrival server is notified to the web phone server through a message storage server, which is a device that allows customers to manage their messages on the web in an existing mobile communication network. Is configured to include a seventh step of delivering it to the web phone.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention;

1 is a configuration diagram of a whole communication system to which the method according to the present invention is applied, and a structure in which a mobile communication network 20 and a web phone service system 10 are connected. The web phone service system 10 is connected to the Internet network.

The mobile communication network 20 includes an exchanger 200, a base station controller (BSC) 210, a base station 220, and a home location register (HLR) 260 which performs location information and additional service processing of a subscriber and a mobile communication device. Signaling Transfer Point / Signaling Gateway (STP / SG) 250, which handles the transmission of Mobile Application Part (MAP) protocols, and Short Message Service Center / Multimedia Message Service Center, which handles the transmission of short and multimedia messages. 280) and a message storage server 290 for storing short messages and multimedia messages received by mobile subscribers on the web, and a customer management server 270 that manages billing and various additional services according to the use of mobile phones. It includes a PGS (PCX Gateway System) 240 in conjunction with the exchange function to interface the mobile communication network with the external PSTN (300) or other communication network.

The web phone service system 10 includes a web phone server 101 and a web phone gateway 102. The web phone service system 10 is connected to the Internet to provide web access, VoIP call processing, and message transmission interworking functions of the web phone 120. The call to 310 or a particular call set up by the operator provides routing to the web phone to form a VoIP based call path to another VoIP gateway 130 directly connected to the Internet.

2 is a flowchart illustrating a procedure of registering / deactivating a web phone service according to an exemplary embodiment of the present invention. Referring to FIG. 2, the subscriber of the mobile communication network installs the web phone 120 using his computer terminal connected to the Internet instead of his mobile phone, and uses the web phone 120 in order to use the call and message transmission and reception. You need to run it on your computer and log on (S201). The account for logging on (ID or password) can be integrated with an account on another web service already used by your mobile carrier, or you can create a separate account on the web phone server. You can also provide The web phone server inputs a mobile identification number (MIN) of the mobile phone when creating an account, and stores ESN (Electronic Serial Number) information of the mobile phone from the customer management server 270 as data. When the user logs on from the web phone 120, the web phone server 101 checks the account and performs logon processing (S202). The logon process checks the ID and password and retrieves the MIN and ESN for the account from the database. The web phone server 101 transmits a feature registration request message (CEATREQ) including a Call Forwarding Unconditional (CFU) code to the HLR 260 using the MAP (Mobile Application Part) protocol using the MIN and the ESN. (S203, S204) At this time, the incoming call number included in the function registration request message is attached to the MIN of the existing mobile phone by using a web phone prefix to prevent waste of the number resources of the mobile communication network. For example, if the MIN of a mobile phone subscriber is 010-2322-1011, the number to be forwarded can be used in the format of 777-010-2322-1011. In this case, 777 is a web phone prefix arbitrarily determined by a mobile carrier.

Receiving a response (S204) to the FEATREQ web phone server 101 transmits an OK message to the web phone (120). From this point, the web phone 120 is ready for use. When the mobile subscriber stops using the web phone 120 and attempts to communicate using the mobile phone, the mobile phone subscriber sends a logoff (S206) to the web phone server 101, and the web phone server 101 sets the CFU release code as a parameter to FEATREQ. The message is transmitted to the HLR 260 and a response is received (S207, S208). At this time, this FEATREQ becomes a call forwarding release request.

3 is a flowchart illustrating a registration / deregistration procedure of another web phone service according to an embodiment of the present invention. 2 is a method of registering / unregistering a web phone, but the web phone server 101 directly accesses the HLR using the MAP protocol. In FIG. 3, the web phone server 101 uses a simple data communication without a MAP protocol stack. This is a method of requesting the call forwarding registration to the HLR 260 via the customer management server 270. In the existing mobile communication network, a function of registering and releasing an additional service from the customer management server 270 to the HLR 260 has been provided. Referring to FIG. 3, the web phone server 101 performs a logon process (S302) on the logon (S301) of the web phone 120, and registers the call forward using the API (APplication Interface) provided to the customer management server 270. A request is made (S303). At this time, the number to be forwarded is composed of a web phone Prefix + MIN as described above. After receiving the call forwarding registration request, the customer management server 270 sets up the call forwarding to the HLR 260 using the existing method and receives the response (S304, S305) and transmits an OK message to the web phone server 101. When delivered to the web phone 120, the web phone is available for use. (S306, S307) The call forward release process for logging off from the web phone 120 is also transmitted to the HLR via the customer management server 270. (S308 , S309, S310, S311, S312, S313)

4 is a flowchart illustrating a processing procedure of an outgoing signal to be routed through a mobile communication network among outgoing calls in the web phone 120 according to an embodiment of the present invention.

In the present invention, the protocol between the web phone 120 and the web phone server 101 is described using SIP (Session Initiation Protocol), but the same concept is commonly used in the H.323 protocol that is widely used in VoIP services. There is no difference. 4, when the web phone 120 dials the other party's telephone number and executes the VoIP call, the web phone 120 transmits the INVITE message to the web phone server 101. (S401) The web phone server receiving the INVITE message 101 is to select the routing by analyzing the included dial number (S402), the data for this routing can be defined by the operator, and generally over the Internet to other VoIP gateways abroad for international calls It is desirable to connect. 4 is a flowchart of a call being routed to a mobile communication network by the selection of routing. The web phone server 101 transmits an INVITE message requesting a call setup to the web phone gateway 102 (S403) and the web phone gateway 102. In step S405, an IAM (Initial Address Message) is transmitted to the PGS (PCX Gateway System) 240 of the mobile communication network. At this time, the destination number is delivered to the IAM, and the dial number included in the INVITE message is transmitted. The calling party number is displayed using the mobile identification number (MIN), which is the mobile phone number of the web phone user, so that the mobile phone number can be displayed in the caller ID display of the other party. The PGS 240 transmits the call to the PSTN 300 inside or outside the mobile communication network. If the PGS 240 sends an ACM (Address Confirm) indicating that the call has been routed (S407), the web phone gateway 102 sends a ringing message to the other party to the web phone 120 via the web phone server 101. To transmit (S408, S409). In order to hear a beep until the other party responds in the web phone 120, the web phone gateway S102 gives an OK message to the web phone 120 in advance to set the call path (S410, S411) and the web phone 120 sends an ACK. It transmits (S412) and performs the setup process to the VoIP call. From this time, the web phone 120 hears a beep sound sent by an exchange that manages communication of the other phone. When the other party responds, the PGS 240 transmits an ANM (Answer Message) (S415) and the web phone gateway 102 sends a response notification message to the web phone server 101 (S416), from which the web phone server 101 responds. Start billing for the call. When the call ends, the call is terminated (S418 ~ S422) and the web phone server 101 creates a call detail record (CDR) and transmits this data to the customer management server (270) (S424). The customer management server 270 recognizes that the call is a VoIP call on the web phone, and charges the subscriber to the mobile phone by applying the charging rate set by the mobile communication service provider. Since this VoIP call does not use wireless network resources, it is desirable to discount a substantial fee.

5 is a flowchart illustrating a procedure of processing an outgoing call to be routed through an internet network among outgoing calls in a web phone according to an embodiment of the present invention.

Referring to FIG. 5, when the web phone 120 dials the other party's telephone number and executes a VoIP call, the web phone 120 transmits an INVITE message to the web phone server 101 (S501). Receiving the web phone server 101 analyzes the included dial number to select Routing (S502), since the illustrated dial number means outgoing to North America, the web phone server 101 calls the call to the Internet network. Routing through the VoIP gateway 130 in North America. The web phone server 101 transmits an INVITE message requesting call setup to the VoIP gateway 130 (S503), and the VoIP gateway 130 transmits an IAM (Initial Address Message) to the overseas PSTN 310 (S505). At this time, it is assumed that the signal network between the overseas PSTN 310 and the VoIP gateway 130 uses No. 7. The destination number transmits the dial number included in the INVITE message to the IAM, and the caller number uses the mobile identification number (MIN), which is the mobile phone number of the web phone user, so that the mobile number can be displayed in the caller ID display of the other party. The following signal procedures and procedures are the same as in the case of FIG. The billing rate for billing data is preferably set by the mobile operator in consultation with overseas VoIP gateway operators.

6 is a flowchart illustrating an incoming call processing procedure to a web phone according to an embodiment of the present invention. Referring to FIG. 6, when the mobile communication network 20 sends a call to the original mobile phone number (MIN) of the subscriber of the web phone, the switch 200 of the mobile communication network 20 sends the LOCREQ (Location) to the HLR 260 for the call connection. Request) to query the location information of the called terminal (S601). The HLR 260 receiving the location information inquiry request first checks whether the call forwarding function is set in the mobile phone before determining the registered location of the mobile phone. Immediately responds to the switch 200 including the number to be forwarded to the locreq message and the number to be forwarded (S602).

At this time, the number to be forwarded is a number of the web phone Prefix + MIN format as described in Figures 2 and 3, that is, the format of 777-010-2322-1011. The exchange 200 uses the web phone Prefix to route the routing to the PGS 240, and transmits the web phone prefix and MIN information received in the step S602 to the PGS 240 for the call connection (S603). Then, the PGS 240 transmits the IAM for the call connection request to the web phone gateway 102 by using the MIN (S604). Receiving the IAM message, the web phone gateway 102 transmits an INVITE message for VoIP call-up to the web phone server 101 using the received MIN (S605), and the web phone server 101 performs an ENUM Query process (S606). It finds the IP address for the MIN received through the web phone 120 and transmits the INVITE message (S607). Upon receiving the INVITE message, the web phone 120 immediately notifies the user that an incoming call has arrived on the computer, and transmits a ringing message to the web phone gateway 102 via the web phone server 101 (S609, S610), and the web phone gateway 102 ) Transmits an ACM message indicating that the incoming call waiting state is transmitted to the PGS 240 (S611), and the PGS 240 transmits the ACM to the exchange 200 again (S612), and the web phone 120 is waiting for the incoming call. Inform. When the web phone 120 responds to the lake response, the OK message is transmitted to the web phone gateway 102 through the web phone server 101, and the web phone gateway 102 directly sends an ACK message to the web phone 120 (S615). After the setup with the VoIP call 120 is completed (S616), an ANM message informing of the response is transmitted to the switch 200 via the PGS 240 (S617 and S618).

The call cutting process after the call is as described above, except that the charging procedure for the web phone 120 is not required for the incoming call, but in some overseas countries, the call is released after the call is released in step S626. In some cases, 101 may transmit charging information to the operator's billing system.

7 is a flowchart illustrating a short message (SMS) and multimedia message (MMS) transmission procedure in a web phone according to an embodiment of the present invention. If the web phone 120 wants to send a short message or a multimedia message, the web phone 120 first transmits a MESSAGE message including the receiving party's phone number to the web phone server 101 and receives an OK message (S701, S702). S101 transmits to SMSC / MMSC 280 using SMDPP (SMS Delivery Point to Point) of MAP protocol (S703), and receives smdpp message response (S704). Processing in the SMSC / MMSC 280 then follows the provisions of the general MAP protocol. Preferably, the web phone server 101 transmits the SMSC / MMSC 280 provided by the mobile communication company using the message transmission relay server for interworking with the web without using the direct MAP protocol. It is even more convenient to use.

8 is a flowchart illustrating a procedure for receiving a short message (SMS) and a multimedia message (MMS) to a web phone according to an embodiment of the present invention. Even if the web phone 120 is logged in and activated, the short message and the multimedia message may be simultaneously transmitted to the user's existing mobile phone as well as the web phone. Similarly, the mobile communication company already has a system that enables a user to check / manage a short message and a multimedia message transmitted to his mobile phone through the web, that is, a message storage server 290. The present invention proposes a method of relaying message delivery to the web phone 120 by using the message storage server 290. Referring to FIG. 8, when a short message or a multimedia message sent to a mobile phone number of a web phone user arrives at the switch 200, the switch 200 transmits the SMDPP message to the SMSC / MMSC 280 and receives a response (S801, S802).

The SMSC / MMSC 280 transmits an SMSREQ to the HLR 260 to query the location information of the called terminal (S803) and receives an smsreq response (S804). The SMSC / MMSC 280 transmits the SMDPP message to the exchange in which the called terminal included in the smsreq is located (S805), so that the message is transmitted to the mobile phone and receives the smdpp response (S806). The SMSC / MMSC 280 then checks whether the called terminal is a web phone user (S807), and if it is a web phone user, an SMS / MMS storage request message so that this message can be stored in the message storage server 290 using the corresponding MIN number. It transmits and receives a response (S808, S809). The message storage server 290 stores the message in its database and at the same time transmits a web phone inquiry message to check whether the web phone is activated for the corresponding MIN number to the web phone server 101 (S810), and a web phone activation result message. Receive (S811) and if the web phone is activated, sends an SMS transmission request message again (S812). The web phone server 101 finds the IP address of the web phone using the MIN number through an ENUM Query step (S813), and transmits a short message or a multimedia message through the MESSAGE message to the web phone (S814), and receives a response (S815, S816).

As described above, the Internet VoIP service (web phone) system and the method of providing the service closely coupled to the mobile communication network according to the present invention, when the mobile subscriber is connected only to any Internet network in the world with his PC, Basic call services such as outgoing and incoming calls, SMS and MMS services can be provided, and the cost savings for saving the wireless resources of the mobile communication network are provided to the mobile network subscribers. The effect of providing a low price occurs.

Claims (5)

In providing a mobile communication service such as a mobile phone at low cost by using a web phone of a computer based on Internet VoIP communication by using a mobile communication number called MIN (Mobile Identification Number) as it is, Web phone subscriber authentication, data exchange with existing mobile communication network, billing, routing of outgoing calls from web phone, incoming call connection control to web phone, call forwarding registration processing to HLR upon request of web phone service registration, sent to mobile phone of web phone subscriber It receives short message and multimedia message from message storage server of existing mobile communication network and delivers it to web phone, proxy server function when connecting to other VoIP gateway to web phone, and manages IP address of subscriber in internet VoIP communication. A first step of constructing a web phone server in charge of a gatekeeper or a location server function; Internet VoIP service (webphone) system combined with a mobile communication network comprising a second step of establishing a web phone gateway instructed to route to the CS (Circuit Switched) network that is instructed by the web phone server. The method of claim 1, In order to switch / cancel the incoming call to the mobile phone when logging on / off from the web phone, the web phone server requests to register / cancel the call forwarding directly to the HLR using the MAP (Mobile Application Part) protocol or the existing mobile communication network. And a third step of registering (logon) / canceling (logoff) a web phone requesting setting / cancellation of a call forwarding function by communicating with a customer management server. The method according to claim 1 and 2, When the call is made through the registered web phone, the web phone server sees the number and routes it through the web phone gateway to the existing mobile communication network or, in the case of a specific number such as overseas, routes the VoIP call to another VoIP gateway through another internet network. And a fourth step of processing a call call using a web phone after the call is completed, the web phone server transmitting the charging information to the customer management server of the existing mobile communication network. The method according to claim 1 and 2, And a fifth step in which an incoming call to a mobile number is referred to a home location register (HLR) at an exchange and is simply switched to a web phone when the registered web phone is used. The method according to claim 1 and 2, Send a short message or multimedia message from an external mobile phone to the mobile phone of the web phone user.Notify the arrival of the message to the web phone server through the message archiving server, a device that allows customers to manage messages on the web. And the web phone server is a short message to the web phone and multimedia message incoming service method comprising the seventh step to deliver it to the web phone.

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