KR20040034121A - Apparatus and Method for Network management in the All-IP Network of Mobile Telecommunication System - Google Patents

Abstract

PURPOSE: A device for managing an all-IP network of a mobile communication system and a method therefor are provided to decide state, capability, and position information on a CSCF(Call Session Control Function) for controlling and managing a service, and to assign the CSCF according to the decided information and a position of a mobile terminal, thereby improving network efficiency and service capability. CONSTITUTION: A P-CSCF(181) transmits a registration request message transmitted from a mobile terminal to an I(Interrogating)-CSCF(182), or relays information between the mobile terminal and S(Serving)-CSCFs(183). The I-CSCF(182) transmits the registration request message to a network manager(190), and transmits the message to the S-CSCFs(183) and the P-CSCF(181) according to a response from the network manager(190). The network manager(190) has an HSS(Home Subscriber Server)(191) for receiving a request from the I-CSCF(182) and transmitting the response.

Description

Apparatus and Method for Network management in the All-IP Network of Mobile Telecommunication System

The present invention relates to an all-IP network management apparatus and method of a mobile communication system that can manage and allocate a call control function that controls and manages calls and services when a subscriber registers in an all-IP network.

The integrated IP (All-IP) network, in which the entire network of the IMT-2000 system is based on the Internet Protocol (IP), is a network using IP for all transmissions from the terminal to the core network.

3PPG defines the All-IP core network as the core network in Release 2000, which uses IP for the transport of all user data and signaling. 3PPG2 uses IP for the transport of user data and signaling between all network entities, including the terminal. IP-based network.

In such an all-IP network, a subscriber performs a registration process in order to receive a service. In the registration process, a call control function for controlling a call and a service of a subscriber's mobile terminal must be allocated.

Accordingly, new components for allocating call control functions for call and service control of mobile terminals have been required.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and an object of the present invention is to provide a mobile communication system to manage and assign a call control function to control and manage calls and services when an IMS subscriber registers in an all-IP network. To provide an all-IP network management apparatus and method of the present invention.

1 is a block diagram illustrating a configuration of an all-IP network to which a network manager according to the present invention is connected;

2 is a block diagram for explaining the configuration and connection of the network management unit according to the present invention;

3 is an explanatory diagram for explaining the configuration and connection of a call control monitoring function unit according to the present invention;

4 is an explanatory diagram illustrating a registration management process of a mobile terminal according to the present invention.

<Description of Symbols for Main Parts of Drawings>

10: mobile terminal 110: wireless network (RAN)

120: SGSN # 130: GGSN

140: MGW # 150: MRF

160: MGCF # 170: SGW

180: CSCF '181: P-CSCF

182: I-CSCF 183: S-CSCF

190: Network management device 191: HSS

192: CFM

An all-IP network management apparatus for a mobile communication system according to the present invention for achieving the above object includes a wireless network for performing a wireless connection with a mobile terminal, and a switching device connected to the wireless network to perform call exchange. A call control function unit connected to an exchange device of a communication network to control and manage calls and services of a mobile terminal, and a network management unit which provides network information to the call control function unit and performs authentication and registration of the mobile terminal. It is done. In addition, the all-IP network management method of a mobile communication system according to the present invention, the step of making a registration request when the power of the mobile terminal is turned on, the step of performing the authentication and registration of the mobile terminal according to the registration request, the mobile terminal Allocating a serving call control function to control a call and a service according to a location, and transmitting registration completion information according to the registration request to the mobile terminal.

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

1 is a block diagram illustrating a configuration of an all-IP network to which a network manager according to the present invention is connected.

1, the all-api network of the mobile communication system according to the present invention; A wireless network (RAN) 110 including a base station and a base station controller for controlling the base station and connected to the mobile terminal 10, and a packet service control and packet data transfer of the mobile terminal 10 connected to the wireless network 110. Serving GPRS Supporting Node (SGSN) 120 and Gateway Supporting Node (GGSN) 130, which are relaying devices, which perform a protocol and address translation when the user's data is transmitted to the public network 200. A media gateway (MGW) 140, a media resource function (MRF) 150 for allocating / releasing resources of the media gateway device 140, and a media gateway device 140. A signal gateway device that is connected to a media gateway control function (MGCF) 160 to control, the media gateway control function 160, and a public network 200 to be described later to convert signals from each other ( Signaling Gateway (SGW) 170 and the Medium Gateway (MGW) 140 Public Land Mobile Network / Public Switched Telephone Network (PLMN / PSTN) legacy network 200, which is a public network connected to the PLMN / PSTN.

In addition, the all-IP network according to the present invention includes a home location registration function and a network management unit 190 for monitoring a call control function to be described later, and call control for processing call control function information connected to the network management unit 190. A Call Session Control Function (CSCF) 180 is provided.

Figure 2 is a detailed block diagram illustrating the configuration and connection of the home subscriber server and the call control function according to the present invention.

Referring to FIG. 2, the call session function control unit (CSCF) 180 includes a relay call control function unit (P-CSCF) 181 and a serving call control function unit (Serving CSCF; S-CSCF). 183 and an interrogating CSCF (I-CSCF) 182.

The relay call control function unit (P-CSCF) 181 transmits a registration request message transmitted from the mobile terminal 10 to the query response call control function unit (I-CSCF) 182 or the mobile terminal 10. ) And serving call control function (S-CSCF) (183).

The Q & A call control function unit (I-CSCF) 182 transmits a registration request message transmitted from the relay call control function unit (P-CSCF) 181 to the network management unit 190, and the network management unit 190. According to the response of the relay call control function (P-CSCF) 181 and the serving call control function (S-CSCF) (183) transmits a message. Accordingly, an appropriate serving call control function unit (S-CSCF) 183 is selected from the plurality of serving call control function units (S-CSCFs), and the relay call control function unit (P-CSCF) 181 is selected. An information relay is performed between the serving call control function unit (S-CSCF) 181 and the mobile terminal 10.

In addition, as shown in Figure 2, the network management unit 190 serves to provide information on the location, authentication and registration of the subscriber's mobile terminal 10, the response request call function control unit (I-CSCF) 182 A Home Subscriber Server (HSS) 191 is received that receives a request of the A and transmits a response accordingly.

The home subscriber server 191 mutually transmits and receives subscriber information and network information with the query response call control function unit 182. The subscriber information is information for authentication registration of a subscriber, and the network information is information required by a call control function unit to control a call and a service with a subscriber mobile terminal.

In addition, the network management unit 190 is connected to a plurality of serving call control function (S-CSCF) 183 to monitor their status and provide the network information accordingly to the home subscriber server (HSS) 191 A CSCF Monitoring Function (CMF) 192 is included.

In the present embodiment, the home subscriber server (HSS) 191 and the call control monitoring function (CMF) 192 are configured separately, but the call control monitoring function (CMF) 192 is a home subscriber server (HSS) ( 191 may be integrally configured.

3 is a block diagram illustrating a configuration and connection of a call control monitoring function unit according to the present invention.

3, the call control monitoring function (CMF) 192 according to the present invention is connected to each serving call control function (S-CSCF) 183 and the home subscriber server (HSS) 191, A capability information unit 192a for processing and storing capability information of each serving call control function unit (S-CSCF) 183, and a topology information unit for processing and storing position information of each serving call control function unit (S-CSCF). 192b and a state information unit 192c for processing and storing system state information of each serving call control function unit (S-CSCF) 183 in the current home network.

The capability information unit 192a processes information on each capability for all serving call control function units (S-CSCF) 183 configured in the home network and stores data accordingly. The detailed structure of this capability information is as follows.

-Whether to possess the IM SSF (Service Switching Function) function that can process the intelligent network service or whether to support the interworking function with the external IM SSF,

-A set of additional services that can be processed,

-Possessing interworking function with the gateway to perform Open Service Access,

-Whether to support interworking with specific or all connection setting protocol (SIP) application server,

-Supported protocol types,

-How much traffic to handle,

-Software package version information.

The topology information unit 192b processes information indicating where each serving call control function unit (S-CSCF) 183 is located and stores data according to the above. Detailed configuration is as follows.

Information to ensure optimal routing by allocating a serving call control function (S-CSCF) 183 in the closest possible area according to the current subscriber location;

-Subscriber's location information.

The state information unit 192c processes information according to the state of each serving call control function unit (S-CSCF) system 183 in the home network and stores the data. A detailed configuration is as follows.

Whether or not allocation is possible at the time of registration of each serving call control function unit (S-CSCF) 183;

-Information about whether it is down for maintenance or traffic.

Hereinafter, a management method for registering an all-IP network according to the present invention will be described.

4 is an explanatory diagram illustrating a registration management process of a mobile terminal according to the present invention. Referring to FIG. 4, when the subscriber's mobile terminal 10 is powered on, the mobile terminal 10 transmits a registration request message to the wireless network (RAN) 110 (S10). The registration request message transmitted to the wireless network (RAN) 110 is transmitted to the relay call management function unit (P-CSCF) 181 through the relay device SGSN 120 and the GGSN 130 (S20) (S30). ). Accordingly, the relay call management function unit (P-CSCF) 181 transfers the registration request message of the mobile terminal 10 to the query response call control function unit (I-CSCF) 182 (S40).

The Q & A call control function unit (I-CSCF) 182 sends a home subscriber server (HSS) 191 of the network management apparatus 190 to collect network information according to a registration request message from the mobile terminal 10. Perform the information request (S50).

The home subscriber server (HSS) 191 of the network management unit 190 is the capability information unit of the call control monitoring function (CMF) 192 in response to a request from the Q & A call control function (I-CSCF) 182. 192a, in conjunction with the topology information unit 192b and the state information unit 192c, obtain information according to the system state of each serving call control function unit (S-CSCF) 183 of the current network (S60 and S70).

In addition, the home subscriber server (HSS) 191 performs authentication and network registration operation according to the information of the database registered in advance for the mobile terminal 10 that sent the registration request message.

In addition, the home subscriber server (HSS) 191 transmits the message according to the registration and the obtained information to the query response call control function unit (I-CSCF) 182 (S80). The question-answer call control function unit (I-CSCF) 182 manages any one of the plurality of serving call control function units (S-CSCF) according to the information transmitted from the home subscriber server (HSS) 191. A serving call control function unit (S-CSCF) 183 is allocated. The question-answer call control function unit (I-CSCF) 182 is a serving call control function unit (S-) according to the mobile terminal 10 and its location information and the system state of each serving call control function unit (S-CSCF). CSCF) 183 is allocated. At this time, the question-answer call control function unit (I-CSCF) 182 is located by the position of the relay call control function unit (P-CSCF) 181 to which the registration request message has been relayed, for example, the position of the mobile terminal 10. Determine and allocate a serving call control function (S-CSCF) 183 with sufficient traffic capacity in the nearest place to provide the service.

The Q & A call control function unit (I-CSCF) 182 transmits a message according to the assigned information and the registration completion transmitted from the home subscriber server (HSS) 191 to the relay call control function unit (P-CSCF) ( 181) (S91). In addition, the question-answer call control function unit (I-CSCF) 182 transmits the allocated information to the corresponding serving call control function unit (S-CSCF) 183 (S92).

The registration completion message according to the registration request message of the mobile terminal 10 received by the relay call control function unit (P-CSCF) 181 is transmitted through the GGSN 120 and the SGSN 130 which are relay devices. In step S110, the wireless network RAN 110 transmits the response message to the mobile terminal 10 in step S120.

Accordingly, the mobile terminal 10 may be provided with a mobile IP that can access the all-IP network and receive a service.

As described in detail above, according to the apparatus and method for managing an all-IP network of a mobile communication system according to the present invention, when a subscriber registers in an all-IP network of IMT2000, the service is controlled and managed. The status, capability and location information of the call control function, which is the network information of the call control function, can be determined, and the call control function can be assigned according to the information and the location of the mobile terminal, thereby improving network efficiency and service capability. It has an effect.

Claims (10)

Controlling and managing calls and services of the mobile terminal by being connected to the switching device of the mobile communication network including a wireless network for performing wireless connection with the mobile terminal and a switching device connected to the wireless network to perform call and packet data exchange. Call control function, An all-IP network management apparatus of a mobile communication system, comprising a network management unit for providing network information to the call control function and performing authentication and registration of a mobile terminal. The method of claim 1, The call control function unit, A relay call control function unit in charge of data relay with a mobile terminal, a query response call control function unit for receiving information relayed by the relay call control function unit and requesting network information to the network management unit, and the query All-IP network management apparatus of a mobile communication system, characterized in that it comprises a plurality of serving call control function to control and manage the service of each mobile terminal assigned according to the control of the response call control function. The method of claim 1, The network management unit, A call control monitoring function connected to the call control function to monitor their status and process network information accordingly; And a home subscriber server that performs the authentication and registration of the mobile terminal based on subscriber information and provides the network information to the call control function in conjunction with the call control monitoring function to assign the call control function to the mobile terminal. All-IP network management device of a mobile communication system, characterized in that. The method of claim 2 or 3, The call control monitoring function unit processes the network information and provides it to the home subscriber server. Process the capability information unit for processing and storing capability information of each serving call control function, the topology information unit for processing and storing position information of each serving call control function, and the system state information of each serving call control function in the current home network. All-IP network management device of a mobile communication system comprising a state information unit for storing. The method of claim 4, wherein The capability information unit is to process the respective capability information for each serving call control function configured in the home network and to store the data accordingly, Whether intelligent network service processing and external intelligent network processing interworking function, additional service set, interworking function with gateway performing open service access, interworking function with connection setting protocol application server, support by each call control function All-IP network management device of a mobile communication system, characterized in that it comprises a possible protocol type, traffic capacity that can be processed and version information of the software package. The method of claim 4, wherein The topology information unit processes the location information of each serving call control function unit and stores the data according to the allocation of the serving call control function unit of the closest possible area according to the access position of the subscriber. IP network management device. The method of claim 4, wherein The state information unit, By processing the information according to the system status of each serving call control function in the home network and storing the data, information on whether each serving call control function can be allocated at the time of registration of subscribers, and the system of each serving call control function All-IP network management device of a mobile communication system comprising the information on whether or not down traffic. The method of claim 4, wherein The home subscriber server obtains information from the call control monitoring function unit according to the query of the query response call control function unit and transmits the information to the query response call control function unit. The Q & A call control unit determines the connection position of the subscriber through the position of the relay call control function to which the registration request message of the subscriber has been relayed among the relay call control functions, and determines the location of the subscriber and the home subscriber server. All-IP network management device of a mobile communication system, characterized in that the allocation of the serving call control function possible to the mobile terminal of the subscriber based on the transmitted information. If the mobile terminal is powered on, requesting a registration. Authenticating and registering the mobile terminal according to the registration request; Allocating a serving call control function to control a call and a service according to the location of the mobile terminal; And transmitting the registration completion information according to the registration request to the mobile terminal. The method of claim 9, The allocating step, Acquiring network information of a serving call control function according to the position of the mobile terminal; And allocating a serving call control function to the mobile terminal according to the acquired network information.