KR100397127B1 - Mobile telecommunication network and method for operating call the same - Google Patents

Abstract

The present invention relates to a mobile communication network and a call operation method of the mobile communication network, and more particularly, to a wireless access network (UTRAN) composed of a plurality of radio network subsystems (RNS); Multiple routers; DHCP / DNS server; A filter for interworking with an existing network; And a mobile communication network including the Internet network, the SGSN and the GGSN which divide and manage session management, mobility management, RANAP processing, GTP processing, MAP processing, charging information collection, MIP matching function, operation and maintenance, address allocation, and domain functions. IGSN with integrated functionality; A home agent performing functions such as subscriber registration, IP routing and route optimization, subscriber and address management, authentication handover, tunneling, reverse tunneling, and the like; And IPv6 is applied to a network consisting of an AAA server that processes a related function and a billing function for authentication by interworking with a server having a subscriber database. The present invention provides signal traffic and user data generated between SGSN and GGSN. By removing the traffic, it reduces the traffic load on the network, prevents unnecessary overhead, and also takes the initiative in establishing the network and standardizing it.

Description

MOBILE TELECOMMUNICATION NETWORK AND METHOD FOR OPERATING CALL THE SAME}

The present invention relates to a mobile communication network and a call operation method of the mobile communication network, and more particularly, to an intergrated GPRS serving node (IGSN), which is an integrated model integrating a serving GPRS support node (SGSN) and a gateway GPRS support node (GGSN). The present invention relates to a mobile communication network and a call operation method of the mobile communication network to enable implementation of a simple mobile communication network and call processing by applying IPv6.

As is well known, 3GPP recommends UMTS (Universal Mobile Telecommunication Service) technology for the wireless network for IMT-2000 service, the next generation mobile communication service, and General Packet Radio Service (GPRS) technology for the data core network. have. In this case, GPRS can apply both a GSM (Global System for Mobile Communication) based wireless network and a third generation mobile communication technology UMTS based wireless network, and the service user accesses various data networks or transmits data between subscribers. This is a possible technique.

Currently, GPRS network technology is developing the 3rd generation GRS (GPRS Serving Node), which is underway for the IMT-2000 service which is aimed at future service, and the current system structure is GPRS and MIP (Mobile IP) subsystem. GSN constituting GPRS is divided into main SGSN and GGSN, so that session management, mobility management, RANAP (Radio Access Network Application Protoco) processing, GTP processing, MAP processing, billing information collection, MIP matching function, operation and maintenance In addition, some addresses, such as address allocation and domain functions, are shared or divided.

There is a Foreign Agent that handles subscriber registration, IP routing, tunneling, reverse tunneling, address management, FA-GGSN tunneling, authentication, and quality control (QoS) for Mobile IP services, and some of the same features. There is a home agent that handles functions such as subscriber registration, IP routing and route optimization, subscriber and address management, authentication handover, tunneling, reverse tunneling, and initial registration, authentication, authorization verification, and billing operation. And an AAA server for performing resource management functions.

Therefore, the conventional mobile communication network configuration as described above has a problem of disposing unnecessary network elements by creating redundant elements for some functions and creating overhead for unnecessary traffic. Due to the configuration of MSC / VLR and CGF and EIR functions, the network configuration is complicated, and there are problems such as address shortage and quality control.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to apply IPv6 to an IGSN incorporating SGSN and GGSN to remove unnecessary network components and to reduce unnecessary traffic. The present invention provides a mobile communication network and a call operation method of the mobile communication network to reduce the load of the communication network.

In order to achieve the above object, the present invention provides a mobile communication network comprising: a radio access network (UTRAN) composed of a plurality of radio network subsystems (RNS); A plurality of routers (R); DHCP / DNS servers; A filter for interworking with another existing network (FILTER); And a mobile communication network including the INTERNET NETWORK,

SGSN that divides session management, mobility management, Radio Access Network Application Protocol (RANAP) processing, GPRS Tunneling Protocol (GTP) processing, MAP processing, billing information collection, MIP matching function, operation and maintenance, address allocation and domain functions IGSN with integrated GGSN functionality; A home agent that performs functions such as subscriber registration, IP routing and route optimization, subscriber and address management, authentication handover, tunneling, reverse tunneling, and the like; And an AAA server for interworking with a server having a subscriber database and processing related functions and charging functions for authentication.

In addition, a call operation method of a mobile communication network according to the present invention comprises: a first step in which an IGSN receives an outgoing message including P-TMSI information from a mobile station;

A second step of determining whether the IGSN is roaming while acquiring P-TMSI information of the mobile station included in the received outgoing message;

If not roaming in the second step, a third step in which the IGSN receives authentication information from an AAA server and performs authentication with the mobile station;

A fourth step of the IGSN transmitting an IP allocation request message to a DHCP / DNS server and receiving an IP allocation response message from the DHCP / DNS server to perform an IP allocation procedure;

A fifth step of the IGSN transmitting an IP registration request message to a home agent and receiving an IP registration response message from the home agent and performing an IP registration procedure;

Transmitting, by the IGSN, IP confirmation information to the mobile station indicating that the IP registration and location procedure is completed; And

And a seventh step in which the mobile station transmits a current IP registration position to the counterpart mobile station to perform a call processing procedure and simultaneously perform a communication operation with the counterpart mobile station.

1 is a network diagram of a mobile communication network according to an embodiment of the present invention;

2 is an operation flowchart illustrating a call operation method of a mobile communication network according to an embodiment of the present invention.

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

101 mobile station 102 radio network subsystem (RNS)

103: IGSN 104: DHCP / DNS server

105: Home Agent 106: AAA Server

107: opponent mobile station

Hereinafter, a mobile communication network and a call operation method of the mobile communication network according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating a network configuration of a mobile communication network according to an embodiment of the present invention. The mobile communication network according to an embodiment of the present invention includes a mobile station 101, a wireless network subsystem 102, an IGSN 103, and DHCP. (Dynamic Host Configuration Protocol) / DNS (Domain Name Server) server 104, home agent 105, AAA server 106, and counterpart mobile station 107.

The mobile station 101 is a wireless terminal including a mobile terminal, a personal digital assistant (PDA), etc., which the user can carry and communicate with, and transmits an outgoing message including P-TMSI information to the IGSN 103. It plays a role.

In addition, the wireless network subsystem 102 receives the outgoing message wirelessly from the mobile station 101 and outputs the corresponding IGSN 103 connected by a line.

In addition, the IGSN 103 includes session management, mobility management, Radio Access Network Application Protocol (RANAP) processing, GPRS Tunneling Protocol (GTP) processing, MAP processing, charging information collection, MIP matching function, operation and maintenance, address assignment. And an integrated model in which SGSN and GGSN are divided and processed for domain functions, and serve to integrate and perform various functions as described above.

The DHCP / DNS server 104 receives an IP assignment request message from the IGSN 103 and transmits an IP assignment response message corresponding thereto to the IGSN 103 to perform an IP assignment procedure.

The home agent 105 is a processor that performs functions such as subscriber registration, IP routing and route optimization, mobile subscriber and address management, authentication handover, tunneling, reverse tunneling, and the like, and requests IP registration from the IGSN 103. Upon receiving the message, the IP registration response message is transmitted to the IGSN 103 to perform an IP registration procedure.

In addition, the home agent 105 serves as a gateway for the mobile IP user to access the Internet.

In addition, the AAA server 106 serves to process authentication related functions and billing functions in conjunction with a server having a subscriber database.

In addition, the counterpart mobile station 107 is a wireless terminal including a mobile terminal, a PDA, etc., which the user can carry and communicate with, while performing a call processing procedure with the mobile station 101 and simultaneously with the mobile station 101. It is responsible for communicating.

The filter part is for interworking with another existing network, that is, interworking with an IPv4 network.

Next, a call operation method of a mobile communication network according to an embodiment of the present invention using a network diagram of the mobile communication network having the above configuration will be described.

2 is an operation flowchart showing a call operation method of a mobile communication network according to an embodiment of the present invention.

First, the IGSN 103 receives an outgoing message including P (Packet) -Temporary Mobile Subscriber Identity (PSI) information from the mobile station 101 through the wireless network subsystem 102 (S1).

Subsequently, the IGSN 103 checks the P-TMSI information of the mobile station included in the outgoing message received from the mobile station 101 and determines whether or not it is roaming (S2).

At this time, if not roaming in the second step (S2), the IGSN 103 receives the authentication information from the AAA server 106 and at the same time performs the authentication with the mobile station 101 (S3).

Thereafter, the IGSN 103 transmits an IP allocation request message to the DHCP / DNS server 104 and receives an IP allocation response message from the DHCP / DNS server 104 and performs an IP allocation procedure (S4). ).

Subsequently, the IGSN 103 transmits an IP registration request message to the home agent 105 and receives an IP registration response message from the home agent 105 to perform an IP registration procedure (S5).

Thereafter, the IGSN 103 transmits IP confirmation information to the mobile station 101 indicating that the IP registration and location procedure is completed (S6).

Then, the mobile station 101 transmits the current IP registration position to the counterpart mobile station 107 to perform a call processing procedure and simultaneously perform a communication operation with the counterpart mobile station 107 (S7).

On the other hand, if the roaming state in the second step (S2), the IGSN 103 transmits an information confirmation request message for the mobile station 101 to the previous IGSN (103) (S8).

Subsequently, the previous IGSN 103 transmits an information acknowledgment message including IMSI and authentication vector information corresponding to the information acknowledgment request message for the mobile station 101 to the IGSN 103 (S9).

As described above, according to the mobile communication network and the call operation method of the mobile communication network, by applying IPv6 to the IGSN which is an integrated model integrating SGSN and GGSN, it is possible to implement a simple mobile communication network configuration and call processing. By removing the signal and user data traffic generated between SGSN and GGSN, it can reduce the traffic load on the network, prevent unnecessary overhead, and also take the initiative in network configuration and standardization. .

In addition, as IPv6 is applied to the integrated model IGSN, as servers such as MSC / VLR and EIR are removed in addition to home location register (HLR) or FA, the network configuration is simplified, and the cost of servers removed is reduced. It works.

Claims (3)

A radio access network (UTRAN) consisting of a plurality of radio network subsystems (RNS); A plurality of routers R; DHCP / DNS server; A filter for interworking with another existing network (FILTER); And a mobile communication network including the INTERNET NETWORK, SGSN that divides session management, mobility management, Radio Access Network Application Protocol (RANAP) processing, GPRS Tunneling Protocol (GTP) processing, MAP processing, billing information collection, MIP matching function, operation and maintenance, address allocation and domain functions IGSN with integrated GGSN functionality; A home agent that performs functions such as subscriber registration, IP routing and route optimization, subscriber and address management, authentication handover, tunneling, reverse tunneling, and the like; And an AAA server for interworking with a server having a subscriber database and processing related functions and charging functions for authentication. A first step in which the IGSN receives an outgoing message including P-TMSI information from the mobile station; A second step of determining whether the IGSN is roaming while acquiring P-TMSI information of the mobile station included in the received outgoing message; If not roaming in the second step, a third step in which the IGSN receives authentication information from an AAA server and performs authentication with the mobile station; A fourth step of the IGSN transmitting an IP allocation request message to a DHCP / DNS server and receiving an IP allocation response message from the DHCP / DNS server to perform an IP allocation procedure; A fifth step of the IGSN transmitting an IP registration request message to a home agent and receiving an IP registration response message from the home agent and performing an IP registration procedure; Transmitting, by the IGSN, IP confirmation information to the mobile station indicating that the IP registration and location procedure is completed; And And a seventh step in which the mobile station transmits a current IP registration position to the counterpart mobile station to perform a call processing procedure and simultaneously perform a communication operation with the counterpart mobile station. The method of claim 2, An eighth step, if the roaming state is performed in the second step, the IGSN transmitting an information confirmation request message for a mobile station to a previous IGSN; And And a ninth step of transmitting, by the previous IGSN, an information acknowledgment message including the IMSI and authentication vector information corresponding to the information acknowledgment request message to the mobile station to the IGSN. .