KR100740787B1 - System And Method For Converged Service Of Unlicensed Radio Network And CDMA Mobile Communication Network - Google Patents

Abstract

The present invention combines a CDMA-based mobile communication network with an unlicensed wireless network (Wi-Fi / Bluetooth) to provide all CDMA mobile communication services in a wireless network section for an unlicensed wireless network for a dual mode MS. And a CDMA mobile communication network convergence service system and method.

The present invention provides a mobile communication terminal accessible to both a CDMA wireless network and an unlicensed wireless network, the dual mode MS being provided with a CDMA mobile communication service through a wireless network connected thereto; A wireless LAN AP that performs wireless communication with the dual mode MS in an unlicensed wireless manner, and is connected to an IP based delivery network to provide an IP based wireless communication environment to the dual mode MS; It connects with CDMA core network equipment through CDMA standard A interface and performs the same role as BSC, and is connected to a wireless LAN AP through the IP delivery network to provide the dual mode MS and IP based wireless access, Unlicensed radio including UMA (Unlicensed Mobile Access) protocol corresponding to CDMA L3 layer protocol and supporting a handoff between the CDMA wireless network and an unlicensed wireless network to provide a CDMA mobile communication service. By implementing the network and CDMA mobile communication network convergence service system and its method, it is possible to convert home / enterprise wired phone use into mobile phone use while expanding the service area of CDMA mobile communication network by utilizing unauthorized wireless network and IP delivery network. In addition, all CDMA mobile communication services can be provided even in an unlicensed wireless network section.

In addition, according to the unlicensed wireless network and CDMA mobile communication network convergence service system and method of the present invention, a CDMA mobile communication service provider can expand and build a service network at a lower cost than a CDMA mobile communication network without changing existing CDMA core network equipment. It can replace the CDMA wireless repeater which is used as a way to solve the service shadow area such as the inside of the building, so that the service area can be expanded at low cost and provide high quality service to the user.

Unlicensed wireless network, CDMA mobile communication network, dual mode MS, UMA, interworking, convergence service

Description

System and Method For Converged Service Of Unlicensed Radio Network And CDMA Mobile Communication Network}

1 is a diagram illustrating an interworking structure of an unlicensed wireless network and a CDMA mobile communication network convergence service system according to the present invention;

2 is a diagram illustrating an interface configuration for interworking with a dual mode MS and a CDMA core network based on UNC in a converged service system according to the present invention;

3 and 4 are diagrams illustrating an interworking structure and a flowchart for explaining a CDMA mobile communication service providing procedure when a dual mode MS accesses an unlicensed wireless network through a WLAN AP in a converged service system according to the present invention. .

5 is a diagram illustrating a protocol structure for signaling a voice call through an unlicensed wireless network in the present invention.

6 is a diagram illustrating a protocol structure for voice transmission of a voice call through an unlicensed wireless network in the present invention.

7 is a diagram illustrating a protocol structure for signaling a packet data call through an unlicensed wireless network in the present invention.

8 illustrates a protocol structure for user data transfer of a packet data call through an unlicensed wireless network in the present invention.

FIG. 9 illustrates a detailed configuration of a UNC that enables CDMA-based UMA technology in the present invention. FIG.

Explanation of symbols on the main parts of the drawings

10: Dual mode MS 21: BTS

22: BSC 31: Wireless LAN AP

32: UNC 32-1: network linkage

32-2: protocol processing unit 32-3: IPSec processing unit

32-4: application function processing unit 32-5: DB function processing unit

32-6: management function processor 41: MSC

42: AAA 43: PDSN

The present invention relates to an interworking service between an unlicensed wireless network and a CDMA mobile communication network. In particular, the present invention relates to an unlicensed wireless network for a dual mode MS by combining a CDMA-based mobile communication network and an unlicensed wireless network (Wi-Fi / Bluetooth). The present invention relates to an unlicensed wireless network and a CDMA mobile communication network convergence service system and method for providing all CDMA mobile communication services even in a section.

Conventional unlicensed wireless network (Wi-Fi / Bluetooth) and GSM or UMTS mobile communication network or CDMA mobile communication network are overlapped with each other and unlicensed wireless network is rapidly spreading due to relatively high service speed and low service cost. On the other hand, there is a disadvantage of providing a narrow service area and low mobility, while the GSM or UMTS mobile communication network or CDMA mobile communication network has a low service speed and high cost, but supports a wide service area and high mobility.

For this reason, the recent development of a dual mode mobile station (dual mode mobile station) capable of connecting to both an unauthorized wireless network and a GSM / UMTS mobile communication network has also been developed. We developed the UMA (Unlicensed Mobile Access) technology, which is a convergence technology that enables interoperability.

Here, the UMA technology described above, unlike other wired / wireless combined service technologies in which a mobile communication core network and a VoIP network interoperate, performs a role similar to a base station controller (BSC) of a mobile communication network (UMA Network). The voice that the controller or UNC provided in the mobile communication network without changing the access point (Access Point, AP) of the wireless network, that is, the core network equipment (MSC, SGSN, HLR, etc.) constituting the existing mobile communication network through the wireless LAN AP. It can transparently provide data and additional services.

Therefore, in the case of using the above-described UMA technology, the same service as the existing mobile communication network can be used by an unlicensed wireless network such as Wi-Fi or Bluetooth from the user's point of view. By installing IP network and wireless LAN AP, it is possible to reduce the shadow area and expand the service area at low cost, and to increase the profit from the mobile operator by inducing the conversion of the landline phone use to the mobile phone use at home. It became.

In addition, the UMA technology described above is based on a standard established by a combination of several wireless infrastructure providing companies, terminal manufacturing companies, and network operation companies, and subscribers use dual-mode MS to provide consistent mobile voice and data services. For this purpose, seamless roaming and service are supported by supporting handover of voice calls and data sessions between mobile and unauthorized wireless networks.

However, the conventional UMA technology is applicable only to a GSM / UMTS-based mobile communication network. In the case of a CDMA-based mobile communication network, a base station transceiver (BTS) and a base station associated with a GSM / UMTS mobile communication network and a radio resource control layer and Since the operation process and communication protocol of the mobile switching center (MSC) are different, there is a problem that the above-mentioned UMA federation standard and technical matters cannot be applied as it is.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and its object is to combine and interoperate with an unlicensed wireless network and a CDMA mobile communication network, thereby expanding the service area of the CDMA mobile communication network by utilizing an unlicensed wireless network and an IP delivery network. It is to convert home / business from wired telephone use to mobile telephone use and to receive all CDMA mobile communication services even in an unauthorized wireless network section.

Another object of the present invention is to enable a CDMA mobile communication service provider to expand and build a service network at a lower cost than a CDMA mobile communication network without changing existing CDMA core network equipment, thereby providing a high quality service to a user. have.

Another object of the present invention is to combine CDMA mobile communication network with an unauthorized wireless network, and to provide CDMA mobile communication service using IP based low cost UMA technology in home / company as a dual mode MS for a user. In addition, by using a high-speed Internet network to provide a packet data service faster than the general CDMA wireless Internet.

A feature of the present invention for solving the above object is a dual-mode MS that is accessible to both a CDMA wireless network and an unauthorized wireless network, and receives a CDMA mobile communication service through a wireless network to which it is connected. Wow; A wireless LAN AP that performs wireless communication with the dual mode MS in an unlicensed wireless manner, and is connected to an IP based delivery network to provide an IP based wireless communication environment to the dual mode MS; It connects with CDMA core network equipment through CDMA standard A interface and performs the same role as BSC, and is connected to a wireless LAN AP through the IP delivery network to provide the dual mode MS and IP based wireless access, Unlicensed radio including UMA (Unlicensed Mobile Access) protocol corresponding to CDMA L3 layer protocol and supporting a handoff between the CDMA wireless network and an unlicensed wireless network to provide a CDMA mobile communication service. Network and CDMA mobile communication network convergence service system.

Here, the UNC supports the CDMA core network MSC and the CDMA standard A1 / A2 / A5 interface for the mobility-related function and voice call processing of the dual-mode MS, but interoperates with each other, and provides a signaling protocol for mobility and voice call processing. It supports the A1 interface as the interworking interface, supports the A2 interface as the interworking interface for the protocol for voice data transmission of voice calls, and the interworking with the IWF (Inter Working Function) for line-based data services such as fax. The A5 interface is supported as an interface.

In this case, the dual mode MS further defines a UMA-L3-CDMA layer that performs the RR / MM / CC function of the CDMA L3 layer below the CDMA L3 layer, in the same manner as the UNC, thereby providing CDMA L3 for voice call signaling. The message is converted into a UMA L3 message and transmitted to the UNC. The UNC is characterized in that the MSC of the CDMA core network is interworked with the SS7 based A1 interface, and voice data is transmitted to the UNC using the RTP / UDP protocol. In the UNC, the voice data is converted into PCM format to conform to the CDMA standard A2 interface and transferred to the MSC of the CDMA core network.

In addition, the UNC supports the PDDMA (Packet Data Service Node) of the CDMA core network and the CDMA standard A10 / A11 interface for providing a packet data call to the dual-mode MS, and interoperates with each other, thereby providing user data transmission of the packet data call. It supports the A10 interface as an interworking interface for the protocol for the protocol, and supports the A11 interface as the interworking interface for the signaling protocol of the packet data call processing function.

In this case, the dual mode MS further defines a UMA-L3-CDMA layer that performs the RR / MM / CC function of the CDMA L3 layer below the CDMA L3 layer, in the same manner as UNC, thereby performing CDMA for packet data call signaling. The L3 message is converted into a UMA L3 message and transmitted to the UNC, and the user data of the packet data call is performed by transferring user data of an upper PPP layer to the UNC.

In addition, the UNC and the dual-mode MS, when using a CDMA mobile communication service through an IP-based unauthorized wireless network connection, Um interface, which is a standard interface between the MS and the BSC of the basic CDMA mobile communication network to the CDMA-based UMA technology The Up 'interface is modified to suitably use, but the Up' interface is an IP-based interface in which the Up interface defined in the GSM-based UMA technology is changed based on the CDMA L3 layer protocol. It establishes IP Security Protocol (IP Security Protocol, IPSec) session to perform encrypted voice and data communication, and transparently provides a mobile communication network service to a dual mode MS.

In this case, the UNC supports the Ax interface to perform a mutual authentication procedure with the dual-mode MS connected to it, interworking with AAA (Authentication, Authorization, Accounting) of the CDMA core network, and the Ax interface uses the UMA technology as the CDMA It is characterized in that the interworking interface for the protocol for performing the mutual authentication procedure for roaming with the unauthorized wireless network to apply to the mobile communication network.

Furthermore, the UNC includes a network interworking unit for interworking with an external system such as a dual mode MS and a CDMA core network; A protocol processing unit for performing protocol processing on an external system connected through the network interworking unit; An IPSec processor for processing a mechanism for communication security with a dual mode MS connected through a WLAN AP and the network interworking unit; DB function processing unit for storing and managing data in the UNC; A management function processing unit which performs a function of collecting and reflecting management information so that the system can be maintained remotely; And an application function processing unit for processing an application function for providing a CDMA-based UMA service through an unlicensed wireless network by interworking with the protocol processing unit, DB function processing unit, and management function processing unit.

The network interworking unit may include: a first Ethernet TCP / IP interworking unit for interworking with a dual mode MS connected through a WLAN AP based on IP communication; A No. 7 interworking unit and an E1 TDM interworking unit for interworking with the MSC of the CDMA core network through No. 7 and E1 interfaces for mobility-related functions and voice call processing; A second Ethernet TCP / IP interworking unit for interworking with the PDSN of the CDMA core network based on IP communication for packet data call processing; And a third Ethernet TCP / IP interworking unit for interworking with AAA, which is a subscriber authentication server of the CDMA core network, by IP communication to support the mutual authentication procedure with the dual mode MS.

The protocol processor may include: a UMA protocol processor configured to perform protocol processing for the dual mode MS when the external system connected through the network interworking unit is a dual mode MS; An A1 / A2 / A5 protocol processor configured to perform mobility processing for the MSC and protocol processing for voice call processing when the external system connected through the network interworking unit is the MSC of the CDMA core network; An A10 / A11 protocol processing unit for performing protocol processing for packet data call processing for the PDSN when the external system connected through the network interworking unit is a PDSN of a CDMA core network; When the external system connected through the network interworking unit is the AAA of the CDMA core network, the AAA may include an authentication protocol processor configured to perform RADIUS or DIAMETER protocol processing for authentication, authorization verification, and billing.

Another feature of the present invention is a CDMA mobile communication service method in which a dual mode MS is connected to an unlicensed wireless network through a WLAN AP, wherein the dual mode MS is a management area of a WLAN AP providing unlicensed wireless network access. Accessing the UNC through the WLAN AP when entering; Performing a registration process in the UNC as the dual mode MS requests registration to the UNC using the UMA-L3-CDMA protocol, which is a UMA protocol corresponding to a CDMA L3 layer protocol; A process of providing a CDMA mobile communication service through the UNC in the CDMA core network when the dual mode MS accesses the CDMA core network by performing an L3 layer processing procedure such as location registration using the UMA-L3-CDMA protocol through UNC. An unlicensed wireless network and a CDMA mobile communication network fusion service method including a.

Here, the process of accessing the UNC through the WLAN AP, after the dual-mode MS is assigned an IP address through a DHCP procedure in an IP-based unauthorized wireless network, the UNC through the IP address or DNS server of the pre-registered UNC It is characterized by accessing the UNC through the WLAN AP using the IP address obtained by changing the domain name of the.

In the aforementioned unlicensed wireless network and CDMA mobile communication network convergence service method, mutual authentication with the dual-mode MS requested to access from the UNC, and using the IKEv2 (Internet Key Exchange version 2) protocol for communication security for IP transport network IP And further comprising establishing a secure protocol session.

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

The present invention is to provide a system and processing method required for UMA technology that can operate in a CDMA-based mobile communication network, that is, a UMA technology that combines and interoperates with an unlicensed wireless network (Wi-Fi / Bluetooth) and a CDMA mobile communication network. To this end, a converged service system for combining and interworking with an unauthorized wireless network and a CDMA mobile communication network has a configuration as shown in FIG. 1.

That is, the unlicensed wireless network and CDMA mobile communication network convergence service system according to the present invention, as shown in Figure 1, the dual-mode MS (10) having a UMA function, the BTS 21 and BSC (22) of the CDMA mobile communication network ), A wireless LAN AP 31 serving as a BTS and an UNC 32 serving as a BSC in an unlicensed wireless network, wherein the CDMA wireless network is used between the BTS 21 and the BSC 22 using a CDMA transmission network. A radio access network (CDMA RAN) is implemented and an unlicensed mobile access network (UMAN) using an IP-based transport network (ie, an IP transport network) between the WLAN AP 31 and the UNC 32. Implement

The dual-mode MS 10 is a mobile communication terminal having a function of accessing a CDMA-based wireless network, that is, a CDMA mobile communication network and an unauthorized wireless network. The dual-mode MS 10 provides all the services of the CDMA mobile communication network through its wireless network. In case of access to the unauthorized wireless network, IP communication with the UNC 32 is performed.

The WLAN AP 31 performs wireless communication with the dual mode MS 10 in an unlicensed wireless manner such as Wi-Fi (802.11) or Bluetooth, and accesses a broadband IP transmission network such as xDSL, cable modem, or optical communication (FTTH). It provides a dual-mode MS (10) IP-based wireless communication environment, and provides IP communication with the UNC (32).

The UNC 32 connects to the MSC 41 and the PDSN 43, which are CDMA core network equipments, through the CDMA standard A interface, and performs the same role as the BSC 22, and the wireless LAN AP ( 31) to provide dual-mode MS 10 and IP-based wireless access, but performs a BSC role, and communicates with the dual-mode MS 10 and the UMA protocol corresponding to the CDMA L3 layer protocol, through which CDMA wireless By supporting handoff between a network and an unlicensed wireless network, seamless roaming and transparent CDMA mobile communication services are provided. In addition, to secure the communication in the IP transport network, establishes an IP Security Protocol session with the dual mode MS 10, performs encrypted IP communication, and performs mutual authentication with the connected dual mode MS 10. do.

In addition, the interface configuration for interworking with the dual mode MS 10 and the CDMA core network based on the UNC 32 of the aforementioned converged service system is shown in FIG. 2, which will be described in more detail. As follows.

First, the UNC 32 interoperates with the MSC 41 of the CDMA core network by supporting the CDMA standard A1 / A2 / A5 interface for mobility-related functions and voice call processing of the dual-mode MS 10. The A1 interface provides mobility. And the interworking interface for the signaling protocol of voice call processing function, the A2 interface is the interworking interface for the protocol for voice transmission of voice calls, and the A5 interface is the IWF (Inter Working Function) for line-based data services such as fax. Interworking interface for

In addition, the UNC 32 interoperates with the PDSN 43 of the CDMA core network and the CDMA standard A10 / A11 interface for a procedure of providing a packet data call (or wireless Internet service) to the dual mode MS 10. The A10 interface is an interworking interface for a protocol for delivering user data of a packet data call, and the A11 interface is an interworking interface for a signaling protocol of a packet data call processing function.

In addition, the UNC 32 supports the Ax interface to perform mutual authentication with the dual-mode MS 10 connected to it, and interoperates with AAA (Authentication, Authorization, Accounting) of the CDMA core network. It is an interworking interface to a protocol for performing mutual authentication procedure for roaming with an unauthorized wireless network to apply the technology to a CDMA mobile communication network.

In addition, the UNC 32 and the dual mode MS 10 use a CDMA mobile communication service through an IP-based unlicensed wireless network connection, and a standard interface between a mobile station (MS) and a BSC 22 of a basic CDMA mobile communication network. The Up 'interface is used to change the Um interface to be suitable for CDMA-based UMA technology. The Up' interface is an IP-based interface that changes the Up interface defined in the GSM-based UMA technology based on the CDMA L3 layer protocol. In the UNC 32 and the dual mode MS 10, an IP security protocol session is established, and the UMA protocol, voice, and data are transmitted through the IP security protocol session.

Referring to the CDMA mobile communication service providing procedure of the unlicensed wireless network and the CDMA mobile communication network convergence service system as described above, this is the CDMA mobile communication when the dual mode MS 10 accesses the CDMA wireless network through the BTS 21. The service providing procedure and the CDMA mobile communication service providing procedure when the dual mode MS 10 accesses to an unlicensed wireless network through the WLAN AP 31 may be classified.

Here, the CDMA mobile communication service providing procedure when the dual mode MS 10 accesses the CDMA wireless network through the BTS 21 is the same as the service providing procedure in the general CDMA mobile communication network, and thus description thereof will be omitted.

A procedure of providing a CDMA mobile communication service when the dual mode MS 10 is connected to an unlicensed wireless network through the WLAN AP 31 will now be described with reference to FIGS. 3 and 4.

First, when the dual mode MS 10 enters the management area of the WLAN AP 31 that provides unauthorized wireless network access, the dual mode MS 10 automatically switches to the UNC (the WLAN AP 31). 32). At this time, the IP-based unauthorized wireless network is assigned an IP address through a procedure such as Dynamic Host Configuration Protocol (DHCP), and the dual-mode MS 10 assigned the IP address is a registered UNC. The IP address (or IP address obtained by changing the domain name of the UNC 32 through the DNS (Domain Name Server) server) is connected to the UNC 32 through the WLAN AP 31. (Step S41).

When the dual mode MS 10 connects to the UNC 32 in this manner, the UNC 32 authenticates the dual mode MS 10 that requested the connection with the EAP (Extensible Authentication Protocol) -CAVE or EAP-TLS or EAP-OTS. Mutual authentication, and an IP security protocol session (IPSec) is established using the Internet Key Exchange version 2 (IKEv2) protocol for communication security for the IP transport network (step S42).

After the mutual authentication and IP security protocol session is established between the UNC 32 and the dual mode MS 10, the dual mode MS 10 requests the UNC 32 to register with the UMA-L3-CDMA protocol. The UNC 32 then performs registration processing in response to the request of the dual mode MS 10 (step S43). In this way, when the dual mode MS 10 is successfully registered with the UNC 32, the dual mode MS 10 is in the same state as successfully connected to the wireless network in the existing CDMA mobile communication network, that is, the BTS (in the existing CDMA mobile communication network). 21) and detects the pilot signal and transitions to the same idle state as monitoring the paging channel and the forward common control channel.

Thereafter, the dual-mode MS 10 performs the L3 layer processing procedure for accessing the CDMA core network such as location registration using the UMA-L3-CDMA protocol which plays the same role as the CDMA L3 layer protocol (step S44). After the dual mode MS 10 connects to the CDMA core network, CDMA mobile communication such as voice call / receive, short message, packet data call, etc. to the dual mode MS 10 is performed using the UMA-L3-CDMA protocol. The service is provided (step S45).

At this time, since the UMA-L3-CDMA protocol plays the same role as the CDMA L3 layer protocol, the application layer protocol related to the mobile communication service, which is a higher layer, is used as it is without change, and thus the CDMA mobile communication service is a dual-mode MS through an unauthorized wireless network. The same is provided to the 10, and the UNC 32 receives the UMA-L3-CDMA protocol message delivered by the dual-mode MS 10, and the BSAP protocol of the CDMA core network is the same as the BSC 22 of the existing CDMA mobile communication network. Since the CDMA core network is interlocked with the MSC 41, the dual mode MS 10 does not distinguish between a mobile communication service and a mobile communication service through a CDMA transmission network. You don't have to.

On the other hand, in the present invention with reference to Figure 5 attached to the protocol structure for the signaling of voice calls over the unlicensed wireless network, which is compared with the conventional GSM-based UMA technology, GSM mobile communication network has a higher L3 layer protocol In the GSM-based UMA technology, the GSM RR layer is divided into a connection management (CM) sublayer related to call processing, a mobility management (MM) sublayer related to middle mobility, and a radio resource (RR) sublayer protocol related to lower radio control. Has a protocol structure that changes to UMA RR layer.

That is, in the CDMA scheme as shown in FIG. 5, since the protocol structure of the L3 layer is not divided into sublayers and all of the RR / MM / CC functions are included in the L3 layer, the UMA-L3-CDMA layer is placed below the CDMA L3 layer. In addition, it defines all the functions of the CDMA L3 layer, and the UNC 32 interworks with the MSC 41 of the CDMA core network with the SS7 based A1 interface. At this time, the UMA-L3-CDMA protocol layer converts the CDMA L3 message for voice call processing into a UMA L3 message and delivers it to the UNC 32. The upper L3 layer is the same without modifying a mobile communication service such as call processing. Can be provided.

In addition, the protocol structure for voice transmission of voice calls over an unlicensed wireless network in the present invention will be described with reference to FIG. 6, which is compared with a conventional GSM-based UMA technology, a GSM mobile communication network using GERAN (GSM / EDGE). In the CDMA mobile communication network, 8K EVRC or 13K QCELP codecs are used in the CDMA mobile communication network, but the types of voice codecs used are different, and the voice data (voice bearer) of the dual mode MS 10 is used. ) Is delivered to UNC 32 using RTP / UDP protocol, and then converted to UNC 32 in PCM format to conform to CDMA standard A2 interface to MSC 41 of CDMA core network.

In addition, the protocol structure for signaling a packet data call over an unlicensed wireless network in the present invention will be described with reference to FIG. 7, which is a case of signaling processing for voice call setup when compared with a conventional GSM-based UMA technology. Likewise, the L3 layer is different from the GSM-based UMA technology. In the GSM mobile communication network, since the GPRS RLC layer performing signaling processing for packet data call setup is separated from the upper LLC layer, the UMA RLC layer is introduced. In the CDMA mobile communication network, the CM3 / MM / RR function of the L3 layer is applied to the packet data call as well as the voice call. Thus, the UMA-L3-CDMA layer is further defined for the packet data call. In the CDMA layer, the CDMA L3 message for packet data call processing is converted into a UMA L3 message and transmitted to the UNC 32.

In addition, referring to FIG. 8, which is a protocol structure for transmitting user data of a packet data call through an unlicensed wireless network in the present invention, when compared with a conventional GSM-based UMA technology, signaling for packet data call establishment As in the case of processing, it can be seen that there is a difference between the GSM-based UMA technology and the protocol structure. In a GSM mobile communication network, IP packets, which are user data of packet data calls, are transferred to the RLC layer through the SNDCP layer and the LLC layer. In the technology, the UMA-RLC layer is substituted for the GSM-RLC layer to enable signaling of packet data calls and user data transfer.However, in a CDMA mobile communication network, signaling of packet data calls is performed using an L3 layer protocol, but user data is PPP. Packet data is passed through LAC layer and MAC layer By transferring the data from the upper layer in the PPP UMA-L3-CDMA layer and performs a packet data call user data transmission.

In addition, the detailed configuration of the UNC 32 that enables the CDMA mobile communication service through the unlicensed wireless network, that is, CDMA-based UMA technology in the present invention, as shown in Figure 9 attached , Network interworking unit 32-1, protocol processing unit 32-2, IPSec processing unit 32-3, application function processing unit 32-4, DB function processing unit 32-5, and management The function processing part 32-6 is provided.

The network interworking unit 32-1 is a function block for interworking with an external system, and includes a first Ethernet TCP / network for interworking with the dual mode MS 10 connected through the WLAN AP 31 based on IP communication. Packet data call processing with the No.7 interworking unit and the E1 TDM interworking unit for interworking with the IP interworking unit, the MSC 41 of the CDMA core network through No.7 and E1 interfaces for mobility related functions and voice call processing AAA (subscriber authentication server of CDMA core network to support mutual authentication procedure with dual-mode MS 10 and dual Ethernet TCP / IP interworking unit for interworking with PDSN (43) of CDMA core network based on IP communication 42) and a third Ethernet TCP / IP interworking unit for interworking with the IP communication.

The protocol processing unit 32-2 is a function block for performing protocol processing for an external system connected through each network interworking unit 32-1, and the dual mode MS (connected via the first Ethernet TCP / IP interworking unit) 10) performs the protocol processing for the voice call processing and mobility-related functions for the MSC 41 of the CDMA core network connected through the UMA protocol processing unit performing the protocol processing for the No.7 interworking unit and the E1 TDM interworking unit. A1 / A2 / A5 protocol processing unit, A10 / A11 protocol processing unit for performing protocol processing for packet data call processing for PDSN 43 of CDMA core network connected through second Ethernet TCP / IP interworking unit, and second Ethernet It includes an authentication protocol processing unit that performs protocol processing (RADIUS or DIAMETER protocol processing for authentication, authorization verification, and billing processing) for the AAA 42 of the CDMA core network connected through the TCP / IP interworking unit. The.

The IPSec processor 32-3 processes a mechanism for communication security with the dual mode MS 10 connected through the WLAN AP 31 and the first Ethernet TCP / IP interworking unit, and the application function processor 32-4. Interworking with each protocol processing unit 32-2, DB function processing unit 32-5 and management function processing unit 32-6 processes an application function for providing a CDMA-based UMA service over an unauthorized wireless network.

The DB function processing unit 32-5 stores and manages the data inside the UNC 32, and the management function processing unit 32-6 performs a function of collecting and reflecting management information so that the system can be maintained remotely. do.

On the other hand, the embodiment according to the present invention is not limited to the above, it can be carried out by various alternatives, modifications and changes within the scope apparent to those skilled in the art with respect to the present invention.

As described above, the present invention implements a service system and method for combining and interworking an unlicensed wireless network and a CDMA mobile communication network, thereby expanding the service area of a CDMA mobile communication network by utilizing an unlicensed wireless network and an IP delivery network. It is possible to convert the use of the landline to the use of the mobile phone, and also to receive all CDMA mobile communication services even in the unlicensed wireless network section.

In addition, according to the unlicensed wireless network and CDMA mobile communication network convergence service system and method of the present invention, a CDMA mobile communication service provider can expand and build a service network at a lower cost than a CDMA mobile communication network without changing existing CDMA core network equipment. As a result, it is possible to replace the CDMA wireless repeater which is used as a solution for eliminating service shadow areas such as inside a building. In addition, if a service provider simultaneously provides broadband communication services such as xDSL, cable modem, and optical communication and CDMA mobile communication service, the two products can be combined to provide a fixed mobile convergence (FMC) solution. You can get it.

In addition, according to the unlicensed wireless network and CDMA mobile communication network convergence service system and method of the present invention, a user can receive a CDMA mobile communication service using a low-cost UMA technology based on IP in a home / company in one dual mode MS. In addition, by utilizing the high-speed Internet network (providing a transmission rate of 1Mbps ~ 20Mbps), the general CDMA wireless Internet (CDMA wireless Internet technology currently has a maximum downlink speed of 2.4Mbps (approximately 600Kbps on the cdma2000 1x EV-DO) The maximum transmission rate is about 153Kbps.)

Claims (14)

A mobile communication terminal accessible to both a CDMA wireless network and an unlicensed wireless network, the mobile communication terminal being provided with a CDMA mobile communication service through a wireless network connected thereto; A wireless LAN AP that performs wireless communication with the dual mode MS in an unlicensed wireless manner, and is connected to an IP based delivery network to provide an IP based wireless communication environment to the dual mode MS; It connects with CDMA core network equipment through CDMA standard A interface and performs the same role as BSC, and is connected to a wireless LAN AP through the IP delivery network to provide the dual mode MS and IP based wireless access, It communicates with the UMA (Unlicensed Mobile Access) protocol corresponding to the CDMA L3 layer protocol, and supports a handoff between the CDMA wireless network and an unlicensed wireless network and includes a UMA Network Controller (UNC) for providing a CDMA mobile communication service. Unlicensed wireless network and CDM mobile communication network convergence service system. The method of claim 1, The UNC interoperates with the MSC of the CDMA core network and the CDMA standard A1 / A2 / A5 interface for mobility-related functions and voice call processing of the dual-mode MS, but interoperates with a signaling protocol for mobility and voice call processing functions. It supports the A1 interface as an interface, the A2 interface as the interworking interface for the protocol for voice data transmission of voice calls, and the interworking interface for the IWF (Inter Working Function) for line-based data services such as fax. Unlicensed wireless network and CDM mobile communication network convergence service system characterized by supporting the A5 interface. The method of claim 2, The dual mode MS further defines a CDMA L3 message for voice call signaling by further defining a UMA-L3-CDMA layer that performs the RR / MM / CC function of the CDMA L3 layer below the CDMA L3 layer, in the same manner as the UNC. A UMA L3 message is transmitted to the UNC, and the UNC is an unlicensed wireless network and CDM mobile communication network convergence service system, characterized in that the interworking with the MSC of the CDMA core network and SS7 based A1 interface. The method of claim 2, The dual mode MS transfers voice data to the UNC using the RTP / UDP protocol, and converts the voice data into the PCM format to conform to the CDMA standard A2 interface to the MSC of the CDMA core network. Unlicensed wireless network and CDM mobile communication network convergence service system. The method of claim 1, The UNC supports a packet data service node (PDSN) of the CDMA core network and a CDMA standard A10 / A11 interface for a procedure of providing a packet data call to a dual-mode MS, and interoperates with each other, and provides a protocol for transmitting user data of a packet data call. And an A10 interface as an interworking interface for the A10 interface, and an A11 interface as the interworking interface for a signaling protocol of a packet data call processing function. The method of claim 5, The dual mode MS further defines a UMA-L3-CDMA layer that performs the RR / MM / CC function of the CDMA L3 layer below the CDMA L3 layer, in the same manner as UNC, thereby providing a CDMA L3 message for packet data call signaling. And transmit the user data of the packet data call by transferring the user data of the upper PPP layer to the UNC by changing the UMA L3 message to the UNC, and transmitting the user data of the upper PPP layer to the UNC. The method of claim 1, The UNC and the dual mode MS use the CDMA mobile communication service through an IP-based unauthorized wireless network connection so that the Um interface, which is a standard interface between the MS and the BSC of the basic CDMA mobile communication network, is suitable for the CDMA-based UMA technology. The modified Up 'interface is used, but the Up' interface is an IP-based interface in which the Up interface defined in the GSM-based UMA technology is changed based on the CDMA L3 layer protocol, and performs mutual authentication procedure and IP security. An unlicensed wireless network and CDA mobile communication network convergence service system, characterized by establishing a protocol session to perform encrypted voice and data communication and transparently providing a mobile communication network service to a dual mode MS. The method of claim 7, wherein The UNC supports the Ax interface to perform mutual authentication with the dual-mode MS connected to it, interworking with the AAA of the CDMA core network, and the Ax interface is an unlicensed wireless network to apply UMA technology to the CDMA mobile communication network. Unauthorized wireless network and CDM mobile communication network convergence service system, characterized in that the interworking interface for the protocol for performing a mutual authentication procedure for roaming with. The method of claim 1, The UNC includes a network interworking unit for interworking with an external system such as a dual mode MS and a CDMA core network; A protocol processing unit for performing protocol processing on an external system connected through the network interworking unit; An IPSec processor for processing a mechanism for communication security with a dual mode MS connected through a WLAN AP and the network interworking unit; DB function processing unit for storing and managing data in the UNC; A management function processing unit which performs a function of collecting and reflecting management information so that the system can be maintained remotely; Unlicensed wireless network and CDM, characterized in that it comprises an application function processing unit for processing the application function for providing a CDMA-based UMA service over an unauthorized wireless network in conjunction with the protocol processing unit, DB function processing unit and management function processing unit Mobile network convergence service system. The method of claim 9, The network interworking unit may include: a first Ethernet TCP / IP interworking unit for interworking with a dual mode MS connected through a WLAN AP based on IP communication; A No. 7 interworking unit and an E1 TDM interworking unit for interworking with the MSC of the CDMA core network through No. 7 and E1 interfaces for mobility-related functions and voice call processing; A second Ethernet TCP / IP interworking unit for interworking with the PDSN of the CDMA core network based on IP communication for packet data call processing; Unauthorized wireless network and CDM mobile communication network comprising a third Ethernet TCP / IP interworking unit for interworking with IP communication with AAA, a subscriber authentication server of the CDMA core network, to support the mutual authentication procedure with the dual-mode MS Convergence Service System. The method of claim 9, The protocol processor may include a UMA protocol processor configured to perform protocol processing for the dual mode MS when the external system connected through the network interworking unit is a dual mode MS; An A1 / A2 / A5 protocol processor configured to perform mobility processing for the MSC and protocol processing for voice call processing when the external system connected through the network interworking unit is the MSC of the CDMA core network; An A10 / A11 protocol processing unit for performing protocol processing for packet data call processing for the PDSN when the external system connected through the network interworking unit is a PDSN of a CDMA core network; If the external system connected via the network interworking unit is the AAA of the CDMA core network, an unauthorized wireless network comprising an authentication protocol processing unit for performing RADIUS or DIAMETER protocol processing for authentication, authorization verification and billing processing for the AAA. CDA Mobile Network Convergence Service System. A CDMA mobile communication service method when a dual mode MS accesses an unauthorized wireless network through a WLAN AP, Accessing a UNC (UMA Network Controller) through the WLAN AP when the dual mode MS enters a management area of the WLAN AP providing unauthorized wireless network access; Performing registration processing in the UNC by requesting registration from the dual mode MS to the UNC using the UMA-L3-CDMA protocol, which is an unlicensed mobile access (UMA) protocol corresponding to a CDMA L3 layer protocol; A process of providing a CDMA mobile communication service through the UNC in the CDMA core network when the dual mode MS accesses the CDMA core network by performing an L3 layer processing procedure such as location registration using the UMA-L3-CDMA protocol through UNC. Unlicensed wireless network and CDM mobile communication network convergence service method comprising a. The method of claim 12, In the process of accessing the UNC through the WLAN AP, the dual mode MS is assigned an IP address through a DHCP procedure in an IP-based unauthorized wireless network, and then a domain of the UNC is provided through an IP address or a DNS server of a registered UNC. Unauthorized wireless network and CDM mobile communication network convergence service method, characterized in that access to the UNC through the WLAN AP using the IP address obtained by changing the name. The method of claim 12, And performing a mutual authentication with the dual-mode MS requested for access by the UNC, and establishing an IP security protocol session using the IKEv2 (Internet Key Exchange) protocol to secure communication for the IP transport network. Wireless network and CDA mobile network convergence service method.

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