Abstract:
본 발명은 가드채널 기반 호수락 제어 장치 및 방법에 관한 것이다. 본 발명에 의하면, 호 요청에 대하여 새로운 호에 대한 가용채널이 모자를 경우에, 해당 호가 비실시간 서비스 호이면 가드채널을 할당하여 호수락을 하여 서비스를 제공하도록 하고, 이후로 호 요청을 하는 핸드오프호가 있는 경우 가드채널이 부족하면, 현재 비실시간 서비스를 이용하고 있는 호에 대하여 전용 채널을 공통채널로 재구성하도록 하여 가용채널을 확보함으로써 핸드오프호에 대한 호수락을 할 수 있도록 한다. 이와 같은 본 발명에 의하면, 가드채널에 따른 자원의 비효율적인 사용을 줄이고, 자원이용효율을 높이면서 핸드오프호에 대한 단절 없이 서비스를 제공할 수 있도록 한다. 가드채널, 핸드오프, 가용채널, 채널 재구성
Abstract:
본 발명은 가드채널 기반 호수락 제어 장치 및 방법에 관한 것이다. 본 발명에 의하면, 호 요청에 대하여 새로운 호에 대한 가용채널이 모자를 경우에, 해당 호가 비실시간 서비스 호이면 가드채널을 할당하여 호수락을 하여 서비스를 제공하도록 하고, 이후로 호 요청을 하는 핸드오프호가 있는 경우 가드채널이 부족하면, 현재 비실시간 서비스를 이용하고 있는 호에 대하여 전용 채널을 공통채널로 재구성하도록 하여 가용채널을 확보함으로써 핸드오프호에 대한 호수락을 할 수 있도록 한다. 이와 같은 본 발명에 의하면, 가드채널에 따른 자원의 비효율적인 사용을 줄이고, 자원이용효율을 높이면서 핸드오프호에 대한 단절 없이 서비스를 제공할 수 있도록 한다.
Abstract:
이동 단말기간 중계 기능을 갖는 복합 기능 이동 단말기에서의 인증 방법을 제안한다. 이를 위해 인증받지 못한 이동 단말기가 기 인증받은 이동 단말기를 선택하여 사전 인증을 받은 후 선택한 이동 단말기로 인증 요구 패킷을 전송하는 사전 인증 방법이 제공된다. 또한, 데이터 패킷인 경우에 네트워크 키를 사용한 검증을 통하여 이동 단말기간에 인증을 하는 방법이 제공된다. 이와 같이 하면, 불법적인 이동 단말기로부터의 서비스 거부 공격에 대하여 불법적인 패킷 유입을 차단할 수 있고 불필요한 인증 요구 패킷을 저감시킬 수 있다.
Abstract:
PURPOSE: A duplex board system and a method for switching duplex boards thereof are provided to instantly switch an active state board to a standby state board when abnormality is generated in the active state board in hardware, and switch the active state board and the standby state board in software. CONSTITUTION: The second duplex board(20) connects with the first duplex board(10) through communication channels(42,43). A cell bus(30) having a multicasting function is a communication bus between the first or second duplex board(10,20) and another board. The first and second duplex boards(10,20) generate signals for switching active and standby states by a state value decided by their hardware abnormal state and state control signals capable of being controlled in software, and a state value of an object board.
Abstract:
PURPOSE: A method for managing THE(Traffic Handling Element) resources in an RNC(Radio Network Controller) in an IMT-2000 WCDMA mobile system is provided to maximize the efficiency of THE resource management by managing THEs on the basis of channels, not calls, and considering traffic distribution service classes. CONSTITUTION: If an operation is started, initial data are received from a database, including configuration information(S11). A context array for a traffic handling processor is configured, and the context array and a list of elements for the traffic handling processor are initialized through the initial data for each processor(S12). Then a THE assignment request is executed through the input of a service type to use a channel(S13). A processor is assigned from the context array of the traffic handling processor according to the channel assignment request(S14). If a THE is assigned to the selected processor(S15), a processor ID and an element ID are outputted(S16).
Abstract:
PURPOSE: A device for converting cells in a wireless communication system is provided to convert AAL2-type cells into AAL5-type cells, and to convert the AAL5-type cells into the AAL2-type cells, thereby increasing bandwidth and trunk efficiency when communicating packets with ATM cells. CONSTITUTION: A UTOPIA input interface(11) receives ATM cells. An input FIFO(12) stores at least one of the ATM cells. A multiplexer(13) selectively outputs one of data outputted from the input FIFO(12) or data outputted from a feedback output buffer(29). A CAM(Content Addressable Memory)(19) stores address conversion control information. An AAL5,2 converter(14) converts AAL5-type traffic ATM cells into AAL2-type ATM cells, and bypasses control ATM cells. A DPRAM(20) stores the AAL2-type ATM cells. A demultiplexer(15) outputs at least one of the AAL2-type ATM cells.
Abstract:
PURPOSE: A device of transceiving an ATM cell and a method therefor are provided to designate the number of UTOPIA level2 slavers mounted on an ATM network and physical addresses, in order to prevent unnecessary address polling, thereby quickly processing ATM cell transceiving. CONSTITUTION: A header converter(130) converts headers of ATM cells received from the first UTOPIA level2 slavers(200). A UTOPIA level2 master output interface(150) generates physical addresses from VPIs/VICs of the converted headers, and outputs the header-converted ATM cells to the second UTOPIA level2 slavers(300). A UTOPIA master input interface(110) receives the ATM cells from the first UTOPIA level2 slavers(200). An input buffer(120) stores the received ATM cells, and transmits the ATM cells to the header converter(130) when necessary. An output buffer(140) stores the converted headers and payload of the ATM cells, and transmits the ATM cells to the UTOPIA level2 master output interface(150) when necessary.
Abstract:
PURPOSE: A device for interfacing an RNC(Radio Network Controller) of a base station in a wireless communication system is provided to supply a physical communication path between the base station and the RNC, and to transmit control information through an HDLC protocol communication path as a duplexing control channel, thereby supporting multimedia and subscriber roaming services. CONSTITUTION: A router interface module(321) performs a router interface within a base station transceiver(31). An AAL2/5 form conversion module(322) converts AAL2-type ATM traffic into AAL5-type ATM traffic while processing voice and image traffic, and converts the AAL5-type ATM traffic into the AAL2-type ATM traffic, and bypasses the AAL5-type ATM traffic. A line interface module(326) interfaces with an RNC(40). An HDLC module(323) transmits control information to a base station control processor when a failure is generated. A CPU module(324) checks and operates each module state of an RNC interface(32), and switches a channel. An SAR module(325) disassembles and assembles AAL5 frames. A clock module(327) inputs a network synchronous clock, transmits a reference clock to a CKGD(Clock Generation amp; Distribution) unit(33), receives the reference clock, and synchronizes links between the RNC(40) and a base station.
Abstract:
PURPOSE: A scheduling method for securing CDV(Cell Delay Variation) and fairness of real-time traffic in an ATM(Asynchronous Transfer Mode) network is provided to normalize real-time traffic by virtual connections, so as to improve CDV for every virtual connection band scheduled based on a difference of CDV values. CONSTITUTION: A request band for each user path, and a largest band in bands for every user path are set up, and clipping threshold for every connection is calculated. CDV(Cell Delay Variation) for every connection is calculated and normalized, and a largest value in the normalized CDV values is selected. The transmission of a corresponding cell of the connection for the selected value to an output link is decided, using the CDV and the clipping threshold.