Abstract:
PURPOSE: A duplexing method of an AAA(Authentication, Authorization, Accounting) system is provided to reduce a trouble recovery time of an AAA system maximally. CONSTITUTION: A duplexed AAA application of an AAA system(server) active/standby server and an AAA application of other system(client) are initialized and started on an idle state(40). The lower security related setting procedure event is generated from each AAA application(41). A TLS(Transport Layer Security) and SCTP(Stream Control Transmission Protocol) layer of the active/standby server executes a lower security related setting procedure of an active server and a standby server(42). A client AAA application starts a communication with an activated server, that is, an AAA service is progressed(43). If a trouble is generated in the active server and an AAA service is stopped(44), the client system which is not communicated with an activated server senses a status of an activated server and checks a security related setting with deactivated server(45).
Abstract:
PURPOSE: A method of assigning a dynamic IP address to an Internet service subscriber terminal visiting a 3-generation GPRS(General Packet Radio Service) network and a device thereof are provided to enable a dynamic IP address assignment within a home ISP network through self home ISP network accessing, thereby easily supporting mobility for a mobile ISP network subscriber and supporting a roaming service. CONSTITUTION: A GGSN(Gateway GPRS Support Node)(116) receiving a session generation request transmits an authentication request to an ISP authentication server(405)(S403). The GGSN(116) receiving an authentication message unicast-transmits an IP address request message to a DHCP relay(401)(S407). The DHCP relay(401) relay-transmits the request message to a DHCP server(403)(S411). The DHCP server(403) transmits an IP address supplying message to the DHCP relay(401)(S413). The DHCP relay(401) unicast-transmits the supplying message to the GGSN(116)(S415). The GGSN(116) unicast-transmits an IP address requesting message to the DHCP relay(401)(S417). The DHCP relay(401) relays the requesting message to the DHCP server(403)(S421). The DHCP server(403) transmits an answer message to the DHCP relay(401)(S423). The DHCP relay(401) unicast-transmits the answer message to the GGSN(116)(S425). A mobile ISP subscriber terminal is assigned with an IP address, and forms a session(S427).
Abstract:
PURPOSE: A method for identify and processing a dynamic IP and a static IP when an ISP mobile subscriber accesses the third generation GPRS(General Packet Radio Service) network is provided to additionally define a flag field for an ISP mobile subscriber's IP in a PPP(Point to Point Protocol) IPCP(Internet Packet Control Protocol) packet in order to indicate whether the IP is dynamic or static and to add an ISP identifier field in order to easily recognize ISP mobile subscriber processing. CONSTITUTION: In an initialization state, a TE(Terminal Equipment) inputs a user ID and a user password, or a secrete key, and attempts packet mobile network access and registration(510,511). After executing LCP/CHAP/IPCP negotiation with an MT(Mobile Terminal)(512), the TE creates a PDP context message on the basis of an end user information element(513), outputs the created PDP context to the network to request the start of a session(514). As a GGSN(Gateway GPRS Support Node) attempts ISP network access(515), an ISP network mobile subscriber's IP is allocated to the GGSN. The GGSN transmits a PDP session response message, including the allocated IP, to the TE through the MT(516). The TE starts packet mobile communication service and Internet service using the allocated IP(517).
Abstract:
PURPOSE: A message definition method for a mobile call process in an ATM-based IMT-2000 switch is provided to simply process a mobile call between an ATM switch and a base station controller for thereby providing various multimedia services of an ATM switch to an IMT-2000 subscriber. CONSTITUTION: An ASSIGNMENT REQUEST message is a message for setting a communication channel by processing a call access set control between a base station controller and an ATM switch and includes an access identifier and an ATM traffic technique information element and is transferred to a base station controller by an ATM switch. An ASSIGNMENT COMPLETE message is a message for transferring a communication channel set completion by processing a call access set control between a base station controller and an ATM switch. An ALERTING message is a message for informing an incoming terminal call. A CALL PROCESSING is a message for informing that a call setting information is not needed. A CONNECT message is a message for informing that an incoming signal is approved. A CONNECT ACKNOWLEDGE message is a message for informing that a call of an incoming/outgoing person is obtained. A RELEASE message is a message for requesting a user's terminal-to-terminal connection release. A RELEASE COMPLETE message is a message for informing an access identifier release. A SETUP message is a message for setting a call.
Abstract:
본 발명은 CT-2 데이터서비스 연동장치를 이용한 서비스 개발에서 단말기로부터의 데이터 서비스 신호를 감지하여 내부의 모뎀 세트에 의한 데이터 변환, 부호화/복호화 및 디지털 패킷 송수신 기능을 처리할 수 있는 CT-2 데이터서비스 연동 시스템에서 패킷 처리 장치 및 그 방법을 제공하는 데 그 목적이 있다. 본 발명에 따르면, 프리앰블 감지 및 추가/제거 수단; 상기 프리앰블 감지 및 추가/제거 수단으로부터 프리앰블이 제거된 신호를 입력받아 순차적으로 출력하며, 입력된 신호를 상기 프리앰블 감지 및 추가/제거 수단으로 출력하는 선입선출 수단; 상기 선입선출 수단으로부터 입력되는 신호로부터 데이터 제어 메시지를 추출하여, 추출된 제어 메시지에 해당하는 제어 신호를 생성하기 위한 데이터 패킷 제어 수단; 상기 데이터 패킷 제어 수단으로부터 입력되는 제어 신호에 따라 모뎀을 할당한 후에, 채널을 할당하여 통신로를 구성하여, 구성된 통신로를 통하여 데이터를 송수신하는 모뎀 정합 수단; 및 외부로부터 입력되는 아날로그 신호를 디지털 신호로 변환하여 출력하고, 상기 모뎀 정합 수단으로부터 입력되는 디지털 신호를 아날로그 신호로 변환하기 위한 코덱 정합 수단을 포함하여 이루어진 CT-2 데이터서비스 연동 시스템에서 패킷 처리 장치가 제공된다.
Abstract:
PURPOSE: A method for generating a pseudo random sequence in a wireless communication system, is provided to generate the pseudo random sequence using binary data generated by repeatedly multiplying an optional input integer by binary parallel data of a tuple, so as to easily implement a scrambler and a de-scrambler with a simple digital logical circuit and a register. CONSTITUTION: Initial data of a tuple is previously generated, and an optional random integer is inputted for deciding a pseudo random sequence finally generated. Whether the inputted integer is capable of generating a sequence satisfying entire period is confirmed. The first tuple multiplication is repeatedly performed by using the initial data of the tuple and a normal basis of a time origin, according to whether the greatest common measure between an entire period value and the inputted integer is a predetermined value, to calculate a conjugate group for an inputted time origin. Coefficient values are calculated in the first tuple type of a minimum polynomial in a Galois field for the inputted time origin. Mapping data in a predetermined second tuple type corresponding to each coefficient value are decided. An input value for the multiplication with the second tuple of data is calculated. A calculation value fed back according to predetermined clocks and the second tuple of data are multiplied. The second tuple of data are inputted, to generate a predetermined bit of pseudo random sequence.
Abstract:
본 발명은 이동 비동기 전달방식 가상채널 교환기에서의 대기 호 처리방법에 관한 것으로서, 임의의 가입자가 하나의 가입자와 통화를 수행중에 다른 가입자로부터 통화를 요구하는 신호를 수신할 경우 그 가입자가 통화중 대기가 가능한 가입자인지를 확인하여, 상기 통화중 대기 서비스가 가능한 사용자이면 이전 통화자와의 통화 호를 보류하고, 새로운 통화 요구자와 호를 연결하여 통화를 수행하며, 상기 통화중 대기 서비스를 가입한 가입자로부터 호 해제 메시지가 발생하면 통화중인 호를 해제하고, 상기 보류중인 호가 있음을 알려 이전 통화자와 통화를 재개하도록 하는 것을 특징하여, 통화중에 다른 가입자로부터의 연락을 인지할 수 없었서, 임의의 가입자가 하나의 가입자와 통화를 길게 할 경우 다른 가입자들의 그 임의의 가입자와 통화 연결이 어렵다는 단점을 해결한다는 효과가 있다.
Abstract:
본 발명은 CT-2 단말기에서 단말기의 소프트웨어의 변경 없이 최소의 비용으로 무선 데이터 서비스를 제공할 수 있는 CT-2 단말기에서의 데이터서비스 접속 장치를 제공하는 데 그 목적이 있다. 본 발명에 따르면, 코덱 및 오디오 멀티플렉서를 구비한 오디오 처리 모듈과, 스피커/마이크를 구비한 CT-2 단말 장치에 있어서, 상기 오디오 처리 모듈로부터 출력되는 신호가 데이터 신호인 경우에, 상기 오디오 처리 모듈과 스피커/마이크간의 절단 기능을 제공하고, 데이터 처리 경로를 생성하는 스위치; 및 상기 오디오 처리 모듈로부터 입력된 데이터 신호를 안정적으로 증폭시켜 출력하고, 외부로부터 입력된 데이터를 안정적으로 증폭하여 상기 오디오 처리 모듈로 출력하기 위한 데이터 정합 모듈을 포함하여 이루어진 CT-2 단말기에서의 데이터서비스 접속 장치가 제공된다.
Abstract:
PURPOSE: A controlling apparatus and method for controlling data service co-operating device is provided to ensure a stable internet service for CT-2 subscribers who do not have a modem by controlling and managing modules of a CT-2 data service co-operating device that provides a data service and an ethernet service in the CT-2 system so as for the subscribers to directly connect with a backbone network by using a modem of the CT-2 data service co-operating device or by using an internet matching function. CONSTITUTION: A device managing and ethernet controlling unit(11) analyzes a service request type received from a sending party terminal. A LAN controller(16) and an ethernet matching unit(12) provide internet service through an ethernet matched to a backbone network by using a point-to-point service of the terminal when the service request analyzed by the device managing and ethernet controlling unit(11) is identified as the internet service request. A VME controller(17), a VME bus matching unit(13), a data packet processing unit(14), and a link line and channel switching unit(15) provides a data and facsimile service by using a modem installed at a CT-2 data service co-operating device, when the service request analyzed by the device managing and ethernet controlling unit(11) is identified as the data and facsimile service request.