KR20060100799A - System and method for unified service of mobile communication network and wireless local area network - Google Patents

Abstract

According to the present invention, when a dual mode terminal capable of accessing a mobile communication network and a wireless LAN moves from a mobile communication network to a wireless LAN service area, the mobile station and the wireless LAN are automatically registered with one subscriber number and interworked with the corresponding mobile communication network and the wireless LAN. The present invention relates to a mobile communication network and a wireless LAN integrated service system and method for providing a voice call service and a text message and packet data service.

The present invention enables a dual mode terminal capable of automatic location registration as a subscriber number for a dual mode terminal accessible to a mobile communication network and a wireless LAN, and by implementing an integrated service system for interworking the mobile communication network and the wireless LAN. It is possible to provide voice call, text message and packet data service interworking with mobile communication network and wireless LAN to users, and also to improve service speed by providing services desired by dual mode users by combining advantages of mobile communication network and wireless LAN. And it is possible to obtain a reduction in the usage fee.

Mobile communication network, wireless LAN, integrated mobile switching center, dual mode terminal, voice call, text message, packet data, location registration, integrated service

Description

System and Method for Unified Service of Mobile Communication Network and Wireless Local Area Network

1 is a diagram illustrating a mobile communication network and a wireless LAN integrated service system according to the present invention.

FIG. 2 shows the internal functional blocks of the integrated mobile exchange in FIG. 1. FIG.

3A and 3B are diagrams for explaining a location registration procedure as a dual-mode terminal moves to a service area of a WLAN in a mobile communication network and a WLAN integrated service system according to the present invention.

4A and 4B are diagrams for explaining a voice call service procedure (when an attempt is made to make a call from a dual mode terminal of a wireless LAN to a terminal of a mobile communication network) for a dual mode terminal that has completed wireless LAN location registration according to the present invention;

5A and 5B are diagrams for explaining a voice call service procedure (when an attempt is made to make a call from a terminal of a mobile communication network to a dual mode terminal of a wireless LAN) for a dual mode terminal having completed WLAN location registration according to the present invention;

6A and 6B are diagrams for explaining a text message service procedure (in case of transmitting a text message from a dual mode terminal of a wireless LAN to a terminal of a mobile communication network) for a dual mode terminal having completed wireless LAN location registration according to the present invention;

7A and 7B are diagrams for explaining a text message service procedure (in case of transmitting a text message from a terminal of a mobile communication network to a dual mode terminal of a wireless LAN) for a dual mode terminal having completed WLAN location registration according to the present invention;

8A and 8B are diagrams for explaining a packet data service procedure for a dual-mode terminal that has completed WLAN location registration in the present invention.

Explanation of symbols on the main parts of the drawings

11: Mobile Switching System (MSC / VLR) 12: Home Location Register (HLR)

13: AAA Server 14: PDSN

15: base station (BTS) 16: base station controller (BSC)

17: access point 20: integrated mobile switch

21: No.7 signal processing unit 22: IP processing unit

23: ISUP processing unit 24: MAP processing unit

25: SIP processing unit 26: voice processing unit

27: voice processing control unit 28: call processing unit

29: service processing unit 30: packet data processing unit

31: system management department

The present invention relates to a mobile communication network and a wireless LAN interworking, and in particular, when a dual mode terminal accessible to a mobile communication network and a wireless LAN moves from a mobile communication network to a wireless LAN service area, as a single subscriber number, the location is automatically registered in the WLAN. The present invention relates to a mobile communication network and a WLAN integrated service system and method for providing a voice call service, a text message, and a packet data service interworked with a corresponding mobile communication network and a wireless LAN.

In general, a wireless LAN (WLAN) refers to a high-speed short-range communication system using radio waves, not an optical fiber or a coaxial cable, and uses a mobile communication terminal such as a PDA, a notebook computer, a mobile phone, or a home or business. It refers to a service that enables wireless high-speed Internet access in a specific WLAN service area.

These WLAN technologies are diverse, such as IEEE 802.11x, HiperLAN2, HomeRF, DECT, etc., but most of the WLAN equipment is based on IEEE 802.11b (2.4GHz) standard known as Wi-Fi at a speed of up to 11Mbps. In addition, IEEE 802.11a (5 GHz) and their combined mode, which is up to 54 Mbps, are also appearing. Such a WLAN is slower than wired high-speed Internet service in terms of speed, but wireless data service of up to 2 Mbps (3G mobile communication service IMT-2000). Rather, it is faster and far less expensive than wireless data rates using packet-based mobile terminals.

In addition, the wireless LAN can be classified into a private WLAN and a public WLAN, which are used to extend or replace an existing wired LAN. It is already widely used in homes, offices, factories, warehouses, hospitals, schools, etc., and often restructures the network to provide benefits such as reduced cable installation and transfer costs. Public WLANs are also called public hotspots. It provides services that allow individual users to access the Internet wirelessly or remotely to corporate networks in places.

On the other hand, the demand for packet data services including the Internet on the mobile communication terminal is intensifying, but the mobile communication terminal according to the prior art mainly provided a small amount of text message services such as voice calls or SMS (Short Message Service), Recently, IMT-2000 system has been started to provide packet data services such as multimedia message service and instant messenger by widening bandwidth and improving system structure, but the transmission speed is significantly lower than that of the WLAN environment described above. As it charges according to the amount of data, there is a significant difference in costs compared to wireless LANs that operate on a flat fee.

In addition, the conventional mobile communication network and the WLAN are currently being duplicated as separate networks. In the case of a mobile communication network, a wide service area and high mobility are supported, but the service speed is slow and expensive, whereas in the case of a wireless LAN, a narrow service is provided. It supports areas and low mobility, but is rapidly expanding with relatively high service speeds and low service costs.

In this regard, in the related art, a dual mode terminal capable of providing both a service through a mobile communication network and a service through a wireless LAN is in commercialization stage, but this can be connected to a mobile terminal and a wireless LAN. Combining the terminals mechanically together to form a single terminal, a terminal user using a dual-mode terminal registered with a different subscriber number in the mobile communication network and wireless LAN, if necessary to access the mobile communication network or WLAN To be provided.

However, in the case of the conventional dual-mode terminal, even though both the mobile communication network and the wireless LAN can be connected, the service can be provided by accessing the mobile communication network and the wireless LAN like the independent terminal using two different subscriber numbers. In addition, there is a problem in that a method for supporting a voice call service or interworking with a text or packet data service using the advantages of a mobile communication network and a wireless LAN has not been implemented yet.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object thereof is to enable automatic location registration as a single subscriber number for a dual mode terminal connectable to a mobile communication network and a wireless LAN, and to establish the mobile communication network and a wireless LAN. An integrated service system and method for interworking are provided.

Another object of the present invention is to provide a mobile communication network and a wireless LAN integrated service system and method, to provide voice communication, text message and packet data services interworking with a mobile communication network and a wireless LAN to a dual mode terminal user. In addition, by combining the advantages of the mobile communication network and the wireless LAN to provide the service desired by the dual-mode users to improve the service speed and reduce the usage fee.

A feature of the present invention for solving the above object is, in a system for providing a series of communication services for a dual-mode terminal connected to a mobile communication network and a wireless LAN, the dual-mode terminal is located in the WLAN service area The mobile communication network and the WLAN integrated service including an integrated mobile switch that automatically registers the location in the WLAN and provides IP-based voice calls, text messages, and packet data services interworked between the WLAN and the mobile communication network. To implement the system.

Here, the integrated mobile switch is characterized by interworking with the access point of the WLAN based on the IP backbone network, and with the MSC, HLR, AAA server and PDSN constituting the mobile communication network through the SS7 network.

In addition, the integrated mobile switch includes: signal and protocol processing means for performing physical connection and signaling processing with a corresponding mobile communication network and a wireless LAN through an SS7 network and an IP backbone network, respectively; Voice processing means for providing a voice call service through the media gateway; Call processing and service processing means for performing location registration, voice call and text message origination / reception processing in association with an MSC of a mobile communication network; Packet data processing means for providing an authentication process for a packet data service and a packet data service in association with an AAA server; Service management means for controlling and managing the overall operation of the integrated mobile exchange.

Another aspect of the present invention is a method for providing a series of communication services to a mobile communication network and a dual mode terminal that can be connected to a wireless LAN, the wireless LAN scanning in a dual mode terminal that was provided with a series of services connected to the mobile communication network Determining whether the mobile station moves to a wireless LAN service area through the mobile station; When the dual mode terminal moves to a wireless LAN service area, registering the dual mode terminal with a wireless LAN in a unified mobile switching system which interworks with a wireless LAN and a mobile communication network; Integrating a mobile communication network and a wireless LAN including a process of providing an IP-based voice call, a text message, and a packet data service interworking with a mobile communication network through a wireless LAN and an IP backbone network for the dual mode terminal registered in the wireless LAN. To implement the service method.

Here, the process of location registration processing of the dual-mode terminal to the wireless LAN, the step of requesting the location registration to the integrated mobile switch in the dual-mode terminal moved to the wireless LAN service area; Registering the subscriber number and the location information of the dual mode terminal requested for location registration in the integrated mobile switching center in a VLR DB linked with the mobile station and requesting location information update to the HLR; After updating the location information of the dual mode terminal moved from the HLR to the wireless LAN service area, delete the location information of the dual mode terminal registered in the VLR DB linked with the MSC in conjunction with the MSC of the existing mobile communication network Characterized in that it comprises a step.

In addition, the process of providing a voice call service for the dual mode terminal, from the dual mode terminal registered in the wireless LAN to the integrated mobile exchange through the IP backbone network using the called party number for the voice call with the terminal of the mobile communication network Requesting call origination; The terminating mobile station requests the called party's location information to the HLR of the mobile communication network through the SS7 network using the called party number, and requests routing information from the HLR to the destination MSC to answer the routing information including the called party information for call establishment. Receiving step; The integrated mobile exchange receives routing information including the incoming information from the HLR in response to the location request, generates a call with the destination MSC, allocates radio channel resources to the destination terminal through the destination MSC, and generates a ring signal. Transmitting; When the called terminal answers the call, forming a call path between the dual mode terminal of the wireless LAN, which is the originator, and the called terminal of the mobile communication network, and providing a voice call service through a media gateway. do.

The process of providing a voice call service to the dual mode terminal may include: requesting a call origination from the calling terminal of the mobile communication network to the MSC using the called party number for the voice call with the dual mode terminal of the wireless LAN; Routing information including the destination information for call establishment by requesting the location information of the called party to the HLR through the SS7 network using the called party number in the MSC of the mobile communication network, and requesting routing information from the HLR to the integrated mobile exchange which is the destination exchange. Receiving a response; In the MSC of the mobile communication network, routing information including the incoming information from the HLR is received in response to the location request to generate a call with the integrated mobile switch, and then the dual mode located in the wireless LAN, the called terminal, through the integrated mobile switch. Allocating a radio channel resource to a terminal and transmitting a ring signal; And when the dual mode terminal responds to the call, forming a call path between the originating terminal of the mobile communication network and the dual mode terminal of the WLAN in the integrated mobile switch to provide a voice call service through a media gateway. .

In addition, the process of providing a text message service for the dual mode terminal, the text message content and the called party number in the dual mode terminal to transmit a text message from the dual mode terminal registered in the wireless LAN to the terminal of the mobile communication network Requesting a text message transmission to an integrated mobile exchange via an IP backbone network; Converting the text message transmitted from the dual-mode terminal into a SMDPP format by the integrated mobile exchange and transmitting the SMS message to the SMSC through the SS7 network together with the called party number; Transmitting the SMSPP-formatted text message received from the integrated mobile switching center together with the called party number to the destination MSC of the mobile communication network after receiving the caller location information for transmitting the text message in response to the HLR of the mobile communication network in the SMSC; And providing a text message service by transmitting a text message to a corresponding called terminal by using a called party number in the called MSC of the mobile communication network and reporting a text message transmission to the SMSC.

In addition, the process of providing a text message service for the dual-mode terminal, the text message content and the called party in the terminal of the mobile communication network to send a text message from the terminal of the mobile communication network to the dual mode terminal registered in the WLAN Receiving a number and requesting a text message to the MSC; Converting the text message transmitted from the mobile communication terminal into a SMDPP format in the MSC of the mobile communication network and transmitting the text message to the SMSC through the SS7 network together with the called party number; The SMSC receives the caller location information for text message transmission in response to the HLR of the mobile communication network, and then transfers the SMDPP format text message received from the MSC of the mobile communication network together with the called party number to which the destination terminal is registered. Transmitting to; Providing a text message service by transmitting a text message to a dual-mode terminal of a wireless LAN, which is a corresponding destination terminal, through a IP backbone network using a called party number and reporting a text message transmission to an SMSC using the called party number in the integrated mobile switching center; Characterized in that.

In the process of providing a packet data service to the dual mode terminal, the dual mode terminal having a location registered in the wireless LAN accesses the Internet through the wireless LAN to use a predetermined packet data service. Requesting mobile IP registration to an integrated mobile switch network via an access point and an IP backbone network in a second step; Requesting subscriber authentication by accessing an AAA server through an SS7 network through the SS7 network, performing subscriber authentication on the dual mode terminal, checking an IP address allocation method, and allocating a mobile IP address; And assigning the mobile IP address to a dual mode terminal of the WLAN to provide a packet data service connected to the Internet through an integrated mobile switch and a PDSN to the mobile IP address.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the present invention, a dual mode terminal capable of accessing a mobile communication network and a wireless LAN is a subscriber number, and the voice call service and text and packet data interworked with each other by automatically registering and registering the location with the mobile communication network or the wireless LAN according to the terminal location. An integrated system capable of providing a service is provided. A system configuration for this is illustrated in FIG. 1.

That is, the mobile communication network and wireless LAN integrated service system according to the present invention provides an IP-based voice call, text message and packet data service between a mobile communication network to which a dual mode terminal is accessible and a wireless LAN, as shown in FIG. 1. By implementing the Unified MSC (Unified MSC) 20 has a configuration that interoperates with each other.

Here, the mobile communication network includes a mobile switching center (MSC) 11 including a visitor location register (VLR) and a home location register (HLR) 12 that stores subscriber information. And, an Authentication Authorization and Accounting (AAA) server 13 for authentication and billing processing, a Packet Data Service Node (PDSN) 14 for packet data exchange, and a Base Station Transceiver Subsystem that handles wireless access: A base station controller (BSC) 16 located between the MSC 11 and the BTS 15 to control and manage a plurality of BTSs 15, and a mobile communication terminal (Mobile) Station (MS) is based on the configuration of interworking with each other, the wireless LAN is an access point (Access Point: AP) 17, which is a wireless LAN access equipment, and connected to the wireless LAN through the access point 17 Wireless LAN terminal (ie, dual-mode terminal) ) Is based on a configuration in which inter-working.

The integrated mobile switch 20 provides an IP-based voice call, text message, and packet data service for interworking a wireless LAN and a mobile communication network to a dual mode terminal having both mobile terminal and wireless LAN terminal functions. That is, when moving to a wireless LAN area while receiving a service by accessing a mobile communication network using a dual mode terminal, the dual mobile terminal 20 automatically registers the dual mode terminal as a wireless LAN terminal and performs wireless LAN and mobile access. MSC / VLR (11) and interworking with the wireless LAN based on the IP backbone network, and also configure the mobile communication network through the SS7 (Signaling System Number 7.) network to provide a service interworking the communication network, Interwork with HLR 12, AAA server 13 and PDSN 14

In addition, as shown in FIG. 2, the integrated mobile switching center 20 is configured to perform physical connection and signaling processing with the corresponding mobile communication network and the wireless LAN through the SS7 network and the IP backbone network. .7 signal processor 21, IP processor 22, ISUP (ISDN User Part) processor 23, MAP (Mobile Application Part) processor 24 and Session Initiation Protocol (SIP) processor 25 , The voice processing unit 26 and the voice processing control unit 27 for providing a voice call service through the Media Gateway and the MSC 11 of the mobile communication network to register location, voice call and text message The call processing unit 28 and the service processing unit 29 which perform the incoming processing, and the packet data processing unit 30 which provides authentication processing and packet data service for the packet data service in conjunction with the AAA server 13, and integrates them. The overall operation of the mobile exchanger 20 The service management part 31 which controls and manages mutually cooperates.

Based on the above-described configuration, the operation of the mobile communication network and the wireless LAN integrated service system according to the present invention are separately classified into a location registration procedure, a voice call service processing procedure, a text message service procedure, and a packet data service procedure. It will be described in detail with reference to the drawings.

First, a location registration procedure as a dual mode terminal user moves to a service area of a WLAN will be described with reference to FIGS. 3A and 3B.

In order to access the mobile communication network and provide its services, the user of the dual mode terminal subscribed to the same wireless LAN (VoIP network) and mobile communication network with the same subscriber number is located on the VLR interworking with the HLR and the MSC where the terminal is located. It should be registered, and the dual-mode terminal registered in any of the VLR and HLR thus checks whether the mobile station has moved to the subscribed WLAN service area through periodic WLAN scanning (step S30).

At this time, if it is determined that the location has not moved to the wireless LAN service area, it provides a general mobile communication service through the mobile communication network.

However, if it is determined that the location has been moved to the WLAN service area, the dual mode terminal accesses the WLAN and requests a location registration to the integrated mobile switch to use the service through the WLAN (step S31). ).

Then, the integrated mobile exchange registers the subscriber number and location information, etc. for the dual mode terminal that requested the location registration in the DB of the VLR (or VLR included in the integrated mobile exchange) interworking with it (step S32). The subscriber location information managed by the HLR is updated by requesting a location update (Update Location) (step S33).

After the dual mode terminal is moved to the wireless LAN service area and the location information is updated, the HLR moves to the corresponding dual mode terminal registered in the VLR DB using the MSC of the existing mobile communication network. By deleting the location information for the dual mode terminal (Location Cancel), the location information for the dual mode terminal registered in the VLR DB of the mobile communication network is deleted (step S34). When a notification message (Location Cancel Ack) is received (step S35), a response message (Update Location Ack) indicating that the location information has been normally updated by the integrated mobile exchange is transmitted to the integrated mobile exchange (step S36).

Afterwards, the integrated mobile exchange normally completes a series of location registration such as location registration and HLR location information update procedure for the dual-mode terminal that has moved to the wireless LAN service area and deletion of location information registered in the VLR DB of the existing mobile communication network. As a result, the wireless LAN location registration procedure for the corresponding dual mode terminal is terminated by registering a location confirmation confirmation to the dual mode terminal (step S37).

Next, a voice call service procedure for a dual mode terminal that has completed wireless LAN location registration according to the above-described procedure will be described with reference to FIGS. 4 and 5 as follows.

First, as shown in Figures 4a and 4b, the caller's number to call if you want to try to make a call for a voice call from any dual-mode terminal registered in the wireless LAN to any mobile communication terminal subscribed to the mobile communication network When call origination request is made to the integrated mobile exchange (step S41), the integrated mobile exchange uses the called party number to request the location information of the called party to the HLR of the mobile communication network (Request Location Information). (Step S42).

Then, after confirming the location of the corresponding called party, the HLR responds to the routing information including the called information for call establishment by requesting routing information to the MSC where the called party's mobile communication terminal is located. (Response Routing Information) is received (steps S43, S43-1), and then, the incoming information received from the destination MSC is transmitted in response to the location request of the integrated mobile switching center (step S42-1). .

Thereafter, when the integrated mobile exchange requests the relay line setting by transmitting an IAM (Initial Address Message) message including the received information received in response to the called party location request to the destination MSC (step S44), the destination MSC receives the address complete Message) A single call is generated by sending a message to an integrated mobile exchange that is an originating exchange (step S44-1), and also a paging request / page response message and a channel resource request and a BSC / BTS. Assignment / Assignment Complete The ring signal is transmitted after allocating a radio channel resource to the called party's mobile terminal through transmission and reception (Assignment Complete).

At this time, the integrated mobile switching center transmits the ringback tone to the dual mode terminal that is the sender through the access point of the wireless LAN (step S46). Then, the call connection message is transmitted from the BSC / BTS as the called party located in the mobile communication network answers the call. When (Connect Message) is transmitted to the destination MSC (step S47), the destination MSC sends an ANM (ANswer Message) message indicating the incoming response to the integrated mobile exchange (step S48), and the integrated mobile exchange goes to the dual mode terminal. By stopping the ringback tone transmission and performing call response processing (step S49), a voice call service is provided through the media gateway by forming a call path between the dual mode terminal of the wireless LAN as the caller and the called party terminal.

On the contrary, as shown in Figures 5a and 5b, due to the call origination of the mobile communication terminal located in the mobile communication network when there is a call incoming request for a voice call to any dual-mode terminal located in the wireless LAN, that is, When a call origination request is made to the MSC using the called party number to be called in the mobile communication terminal of the located caller (step S51), the MSC requests the location information of the called party to the HLR using the called party number. (Request Location Information) (step S52).

At this time, the HLR checks the location information of the corresponding called party, and when it is determined that the called party is located in the WLAN, call establishment is performed by requesting routing information to the integrated mobile exchange in which the dual mode terminal of the called party is located. Response Routing Information is received (Response Routing Information) including the incoming information for the request (steps S53, S53-1). Location Information) (step S52-1).

Thereafter, when the relay mobile station requests the relay line setting by transmitting an IAM message including the received information received in response to the caller location request from the originating MSC to the unified mobile exchange as the destination exchange (step S54), the unified mobile exchange sends the ACM message to the originating MSC. A call is generated by transmitting the signal to the dual mode terminal of the called party via the access point of the WLAN (step S54-1), and then the ring signal is transmitted (step S55).

At this time, the originating MSC transmits the ringback tone to the calling terminal through the BSC / BTS (step S56), and afterwards, a call exchange message is transmitted from the access point as the called party located in the WLAN responds to the call. When sending to an integrated mobile exchange (step S57), the integrated mobile exchange sends an ANM message indicating an incoming response to the originating MSC (step S58), and the originating MSC stops ringback tone transmission to the calling terminal and answers the call. By performing the processing (step S59), a voice call service is provided through the media gateway by forming a call path between the calling party terminal and the dual mode terminal of the called wireless LAN.

In addition, referring to Figures 6 and 7 attached to the text message service procedure for the dual-mode terminal has completed the WLAN location registration according to the above-described procedure as follows.

First, as illustrated in FIGS. 6A and 6B, when a dual mode terminal registered in a wireless LAN wishes to transmit a text message to an arbitrary mobile communication terminal subscribed to a mobile communication network, a text message content desired by a dual mode terminal user is desired. And when the message transmission is executed after inputting the called party number (steps S60 and S61), the integrated mobile switch converts the text message transmitted from the dual-mode terminal into a short message delivery point-to-point (SMDPP) format. In addition, by sending a text message service center (SMSC), a corresponding text message is requested (step S62).

Then, the SMSC transmits a response message (smdpp) informing the reception of the text message (step S62-1), and requests the called party location information for the text message transmission to the HLR of the mobile communication network using the called party number (step S62-1). SMSREQ) (step S63), the HLR checks the location information of the corresponding called party and sends the MSC where the called party's mobile communication terminal is located, that is, the location information including the called MSC information as a response to the location request (smsreq). The data is transmitted (step S63-1).

Subsequently, when the SMSC, which has received the called party's location information, transmits the SMSPP-formatted text message transmitted from the integrated mobile switching center in which the dual mode terminal is the sender to the called MSC, which is the MSC in which the called party is located, (step S64), The destination MSC transmits a text message to the corresponding called party terminal using the called party number (step S65), and receives a text message reception response from the called terminal (step S65-1), and reports the text message transmission to the SMSC (step S65-1). sdmpp) (step S64-1), a series of text message services are provided.

On the contrary, as shown in FIGS. 7A and 7B, when a text message is transmitted from a mobile communication terminal located in a mobile communication network to an arbitrary dual mode terminal located in a wireless LAN, a text message content and a called party desired by a mobile communication terminal user. If the message is transmitted after entering the number (steps S70 and S71), the MSC converts the text message transmitted from the mobile communication terminal into the SMDPP format and sends the SMSC along with the called party number to request the corresponding text message. (Step S72).

The SMSC then sends a response message (smdpp) informing the receipt of the text message (step S72-1), while requesting the recipient location information for the text message transmission to the HLR using the called party number (SMSREQ). (Step S73), the HLR checks the location information of the corresponding called party and transmits the location information including the switch in which the dual-mode terminal of the called party is located, that is, the integrated mobile exchange information, in response to the location request (smsreq). (Step S73-1).

Subsequently, when the SMSC, which has received the called party's location information, transmits the SMSPP-formatted text message transmitted from the MSC where the calling party terminal is located to the integrated mobile exchange, which is the exchange where the called party is located, with the called party number (step S74), By using the called party number, a text message is transmitted to a dual mode terminal, which is a corresponding called terminal (step S75). If a text message reception response is received from the dual mode terminal (step S75-1), the SMSC sends a text message. By reporting smdpp (step S74-1), a series of text message services are provided.

Furthermore, a packet data service procedure for a dual mode terminal that has completed WLAN registration according to the above-described procedure will be described with reference to FIGS. 8A and 8B as follows.

In the present invention, when a dual mode terminal registered in a wireless LAN intends to use a predetermined packet data service (eg, MagicN, Fimm, Nate, June, etc.) by accessing the Internet through the wireless LAN, the dual mode terminal is wireless. Through the access point of the LAN, the mobile IP registration request is made to the integrated mobile switching system based on the IP backbone network (step S81).

Then, the integrated mobile exchange connects to the AAA server through the SS7 network and requests a subscriber authentication to the AAA server (step S82). In this way, the AAA server requests the dual-mode terminal to request authentication through the integrated mobile exchange. After authenticating the subscriber, the authentication response is transmitted to the integrated mobile switch (step S83).

In addition, the integrated mobile exchange checks the IP address allocation method information and allocates a mobile IP address in association with an IP pool or a Dynamic Host Configuration Protocol (DHCP) server, and requests the mobile IP address registration from the allocated mobile IP address information. The dual mode terminal is sent as a response (Mobile IP Registration Reply) (step S84).

Subsequently, the dual mode terminal assigned the mobile IP address can access the Internet through the integrated mobile switch and the PDSN using the mobile IP address assigned to the mobile IP address and use the desired packet data service.

In addition, the embodiments according to the present invention are not limited to the above-described embodiments, and various alternatives, modifications, and changes can be made within the scope apparent to those skilled in the art.

As described above, the present invention enables an automatic location registration as a single subscriber number for a dual mode terminal accessible to a mobile communication network and a wireless LAN, and implements an integrated service system for interworking the mobile communication network and a wireless LAN. In addition, it is possible to provide voice communication, text message and packet data service interworking with mobile communication network and wireless LAN to dual mode terminal users, and also provide the service desired by dual mode users by combining the advantages of mobile communication network and wireless LAN. As a result, service speed can be improved and user fees can be reduced.

Claims (10)

A system for providing a series of communication services for a dual mode terminal connectable to a mobile communication network and a wireless LAN, When the dual mode terminal moves to a wireless LAN service area, the mobile device automatically registers the location of the dual mode terminal and provides IP-based voice calls, text messages, and packet data services interworked with the wireless LAN and the mobile communication network. Mobile communication network and wireless LAN integrated service system comprising a switch. The method of claim 1, The integrated mobile switch interoperates with an access point of a wireless LAN based on an IP backbone network, and interoperates with an MSC constituting a mobile communication network through an SS7 network, an HLR, an AAA server, and a PDSN. LAN integrated service system. The method of claim 1, The integrated mobile switch includes: signal and protocol processing means for performing physical connection and signaling processing with a corresponding mobile communication network and a wireless LAN through an SS7 network and an IP backbone network, respectively; Voice processing means for providing a voice call service through the media gateway; Call processing and service processing means for performing location registration, voice call and text message origination / reception processing in association with an MSC of a mobile communication network; Packet data processing means for providing an authentication process for a packet data service and a packet data service in association with an AAA server; And a service management means for controlling and managing the overall operation of the integrated mobile switching system. A method for providing a series of communication services to a dual mode terminal connectable to a mobile communication network and a wireless LAN, Confirming whether the mobile terminal accesses the mobile communication network and moves to a wireless LAN service area through wireless LAN scanning from a dual mode terminal provided with a series of services; When the dual mode terminal moves to a wireless LAN service area, registering the dual mode terminal with a wireless LAN in a unified mobile switching system which interworks with a wireless LAN and a mobile communication network; And providing an IP-based voice call, a text message, and a packet data service interworking with the mobile communication network through the wireless LAN and the IP backbone network for the dual mode terminal registered in the wireless LAN. And WLAN integrated service method. The method of claim 4, wherein The location registration process of the dual mode terminal in the wireless LAN may include: requesting location registration from a dual mode terminal having moved to a wireless LAN service area to an integrated mobile exchange; Registering the subscriber number and the location information of the dual mode terminal requested for location registration in the integrated mobile switching center in a VLR DB linked with the mobile station and requesting location information update to the HLR; After updating the location information of the dual mode terminal moved from the HLR to the wireless LAN service area, delete the location information of the dual mode terminal registered in the VLR DB linked with the MSC in conjunction with the MSC of the existing mobile communication network Mobile communication network and wireless LAN integrated service method comprising the step of. The method of claim 4, wherein In the process of providing a voice call service to the dual mode terminal, a dual mode terminal registered in a wireless LAN transmits a call to an integrated mobile exchange through an IP backbone network using a called party number for a voice call with a terminal of a mobile communication network. Requesting; The terminating mobile station requests the called party's location information to the HLR of the mobile communication network through the SS7 network using the called party number, and requests routing information from the HLR to the destination MSC to answer the routing information including the called party information for call establishment. Receiving step; The integrated mobile exchange receives routing information including the incoming information from the HLR in response to the location request, generates a call with the destination MSC, allocates radio channel resources to the destination terminal through the destination MSC, and generates a ring signal. Transmitting; When the called terminal answers the call, forming a call path between the dual mode terminal of the wireless LAN, which is the originator, and the called terminal of the mobile communication network, and providing a voice call service through a media gateway. Mobile communication network and WLAN integrated service method. The method of claim 4, wherein The process of providing a voice call service to the dual mode terminal may include: requesting a call origination from the calling terminal of the mobile communication network to the MSC using a called party number for a voice call with the dual mode terminal of the wireless LAN; Routing information including the destination information for call establishment by requesting the location information of the called party to the HLR through the SS7 network using the called party number in the MSC of the mobile communication network, and requesting routing information from the HLR to the integrated mobile exchange which is the destination exchange. Receiving a response; In the MSC of the mobile communication network, routing information including the incoming information from the HLR is received in response to the location request to generate a call with the integrated mobile switch, and then the dual mode located in the wireless LAN, the called terminal, through the integrated mobile switch. Allocating a radio channel resource to a terminal and transmitting a ring signal; When the dual mode terminal responds to a call, forming a call path between an originating terminal of a mobile communication network and a dual mode terminal of a wireless LAN in an integrated mobile switch, and providing a voice call service through a media gateway. Mobile communication network and wireless LAN integrated service method. The method of claim 4, wherein The process of providing a text message service for the dual mode terminal may include inputting a text message content and a called party number from the dual mode terminal when a text message is to be transmitted from a dual mode terminal registered in a wireless LAN to a terminal of a mobile communication network. Receiving and requesting a text message transmission to an integrated mobile exchange over an IP backbone network; Converting the text message transmitted from the dual-mode terminal into SMDPP format and transmitting the SMS message to the SMSC through the SS7 network along with the called party number in the integrated mobile switching center; Transmitting the SMSPP-formatted text message received from the integrated mobile switching center together with the called party number to the destination MSC of the mobile communication network after receiving the caller location information for transmitting the text message in response to the HLR of the mobile communication network in the SMSC; And providing a text message service by transmitting a text message to a corresponding called terminal using a called party number in the called MSC of the mobile communication network and reporting the text message transmission to the SMSC. Integration service method. The method of claim 4, wherein In the process of providing a text message service for the dual mode terminal, when a text message is to be transmitted from a terminal of a mobile communication network to a dual mode terminal registered in a wireless LAN, the content of the text message and the called party number may be transmitted from the terminal of the mobile communication network. Requesting a text message transmission to the MSC; Converting the text message transmitted from the mobile communication terminal into a SMDPP format in the MSC of the mobile communication network and transmitting the text message to the SMSC through the SS7 network together with the called party number; Integrated SMS, where the called terminal is located with the called party's number, with the called party's number in the SMDPP format text message received from the MSC of the mobile communication network after receiving the receiver's location information for text message transmission in response to the HLR of the mobile communication network. Transmitting to the exchange; Providing a text message service by transmitting a text message to a dual-mode terminal of a wireless LAN, which is a corresponding destination terminal, through a IP backbone network using a called party number and reporting a text message transmission to an SMSC using the called party number in the integrated mobile switching center; Mobile communication network and wireless LAN integrated service method characterized in that. The method of claim 4, wherein The process of providing a packet data service to the dual mode terminal may be performed by a dual mode terminal registered in a wireless LAN when the dual mode terminal accesses the Internet through the wireless LAN to use a predetermined packet data service. Requesting mobile IP registration with the integrated mobile exchange through the point and IP backbone network; Requesting subscriber authentication by accessing an AAA server through an SS7 network through the SS7 network, performing subscriber authentication on the dual mode terminal, checking an IP address allocation method, and allocating a mobile IP address; And assigning the mobile IP address to a dual mode terminal of the wireless LAN to provide a packet data service connected to the Internet through an integrated mobile switching center and a PDSN to the mobile IP address. Integration service method.

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