Abstract:
PURPOSE: An internet service intercepting method and system thereof are provided to easily obtain packet without accurate analysis of the packet. CONSTITUTION: An application service provider receives an interception request from an interception unit(S120). The application service provider transfers a user code corresponding to interception target information to the interception unit(S140). The application service provider inserts user related information to the packet(S160). The interception unit requests the interception to an Internet access service provider(S180).
Abstract:
PURPOSE: A method and apparatus for retransmission are provided to improve the retransmission device performance by rapidly performing retransmission related operations. CONSTITUTION: A method for retransmission comprises: receiving a data burst transmitted by occupying at least one sub frame from the other one of the terminal and the base station(S510); determining a transmission timing for transmitting a feedback signal based on a value determined by transmission information of the data burst including the number of sub frames occupied by the data burst and a frame offset; transmitting the feedback signal to the other one of the terminal and the base station at the transmission timing(S520); and receiving the data burst retransmitted from the other one of the terminal and the base station if an NACK message is included in the feedback signal(S530).
Abstract:
PURPOSE: A wireless location measuring method and device thereof are provided to reduce a location measurement error due to the electronic wave environment between a transmitter and a receiver. CONSTITUTION: A signal receiving unit receives signals from transmitters(S300). An electronic wave environment determining unit determines the electronic wave delay taps of the signals from the transmitters(S310). A transmitter order setup unit sets the order of the transmitter using a determination result of the electronic wave environment determining unit(S320). A distance measuring unit measures the distance between a transmitter and a receiver(S330). A location estimating unit estimates the location of the receiver using the order and the distance(S340).
Abstract:
본 발명은 무선 통신의 모바일 IPv6 패킷 전송 방법에 관한 것이다. 더 상세하게 말하자면, 무선 통신에서 사용하는 사용자 단말에서 모바일 IPv6를 기반의 인터넷 패킷 서비스를 제공할 때, 기지국(Access Point)과 단말간의 무선 자원 이용의 효율성을 향상시키기 위한 방법에 대한 것이다. 단말의 IP 패킷을 기지국에서 처리하기 위해서는 단말과 기지국 사이에 협상을 위한 호처리가 선행되어야 한다. 즉, 무선 통신에서 모바일 IPv6를 이용하여 패킷을 라우팅 할 때, 기지국(AP)의 무선 구간에 단말이 접속하여 초기 접속 과정을 수행할 때 모바일 IPv6 패킷의 처리에 대하여 협상 한다. 따라서 기지국이 상대노드에서 단말로 수신되는 다운링크의 경우 캡슐화(Encapsulation)된 IPv6 패킷들을 캡슐해제(Decapsulation)하여 단말로 전송 하고, 상대노드로 전송하는 업링크의 경우 기지국이 단말로부터 수신한 IPv6 패킷을 캡슐화 하여 전송함으로써 무선자원을 효율적 지원할 수 있다. 캡슐화, 캡슐해제, IPv6, 업링크, 다운링크
Abstract:
A repeater and a ranging method using the same in a mobile communication system are provided to prevent a loss of a ranging code and improve a call connection rate and the performance of periodical ranging. When a repeater transmits a message informing about initialization to a base station transmits a repeater initialization message to the repeater(S100). The repeater randomly selects an arbitrary ranging code among a plurality of ranging codes included in the message(S110) and transmits corresponding information to the base station(S120). The base station measures a timing offset and a power offset of the repeater by using the received ranging code and stores a result value(S130). The base station transmits the stored timing offset and power offset values included in a ranging code response message to the repeater(S140). The repeater stores the timing offset and power offset based on the values included in the received message(S150).
Abstract:
A bandwidth fixed allocation method of an ARQ(Auto Repeat Request) feedback traffic message for downlink ARQ traffic processing in a WIBRO(Wireless Broadband Internet) system is provided to remove a back off delay generated in transmission of a Br code by transmitting the ARQ feedback message for the ARQ traffic to an uplink. A bandwidth fixed allocation method of an ARQ feedback traffic message for downlink ARQ traffic processing in a WIBRO system includes the steps of: at a base station scheduler, fixedly allocating an ARQ feedback message to be transmitted from a terminal receiver to a base station when a transmitter of the base station transmits the ARQ data; and transmitting ARQ data at the base station transmitter. A terminal of the WIBRO system performs a fast response and request for connection of an urgent signal message and the ARQ feedback message by transmitting a Br Req header without CDMA allocation which is allocated by the base station scheduler.
Abstract:
본 발명은 무선 통신 시스템의 기지국에서 패킷 스케줄러가 주기적으로 대역을 할당해야 하는 서비스들을 제어할 수 있는 주기적인 자원 할당 방법 및 그 데이터 구조를 기록한 기록매체에 관한 것이다. 본 발명에 따른 패킷 스케줄러의 주기적인 자원 할당 방법은, a) 패킷 스케줄러가 현재 프레임에서 처리해야 하는 큐의 식별자를 획득하는 단계; b) 큐 식별자에 연결되어 있는 큐 아이템 정보를 검색하는 단계; c) 큐 아이템이 존재하는 경우, 대역 할당 함수를 호출하여 대역을 할당하는 단계; d) 큐 아이템의 주기 정보를 이용해서 다음 주기 때 처리하게 될 새로운 큐 식별자를 계산하는 단계; e) 새로운 큐 식별자에 연결될 큐 아이템 정보를 생성하여 추가하는 단계; 및 f) 현재 큐 식별자에 연결된 큐 아이템을 삭제하는 단계를 포함하며, 여기서, 큐 아이템은 주기 정보 및 트래픽 연결 식별자 정보를 포함하는 자료를 저장하고 있다. 본 발명에 따르면, 주기적인 대역을 할당해야 하는 음성 서비스나 폴링 서비스를 제공할 때, 종래 기술에 따른 타이머를 이용하지 않고, 주기 정보를 저장하는 자료 구조를 이용하기 때문에, 타이머 부하로 인한 태스크 처리 지연을 방지할 수 있다. 주기적인 자원 할당, 자료 저장, 패킷 스케줄러, 큐 식별자, 큐 아이템
Abstract:
본 발명은 초고속 휴대 인터넷 시스템에 관한 것이다. 본 발명에 따르면 핸드오버 발생시 IP 패킷뿐만 아니라 해당 ARQ 연결 정보와 IP패킷 정보 및 IP 패킷의 전송 블록 정보를 포함하여 새로운 기지국으로 전달한다. 이와 같이 하면 손실 없는 ARQ 트래픽 전송을 보장하고 효율적인 무선자원을 사용할 수 있다. 초고속 휴대 인터넷 시스템, 핸드 오버, ARQ 트래픽
Abstract:
PURPOSE: A method for managing the transmission timing of a DL(DownLink) transport channel in a WCDMA system is provided to increase the data quality of a system by preventing a traffic frame, transmitted to a base station from a base station controller, from being out of synchronization, reducing the burdens of the base station controller and the base station for buffer management, and eliminating an excessive transmission delay. CONSTITUTION: If a transmission timing management function for DL transport channels begins after node synchronization(S600), a base station controller checks every TTI(Transmission Time Interval) whether frames to be sent to a DL are stored in a queue(S601). If stored frames exists in the DL queue, the base station controller copies a CFN(Connection Frame Number) value from a DL data frame stored in the last of the queue, makes a DL synchronization frame using the value, and stores it in the last of the queue(S603). If the base station sends the DL synchronization frame to a base station, the CFN of the sent frame is stored. At this moment, a standby timer is set a much as Twus(Timer for wait_ul_sync), and the base station controller waits for a UL(UpLink) synchronization frame(S604). If a UL synchronization frame is received(S606), the base station controller checks whether the CFN of the frame is matched with the CFN of the sent DL synchronization frame(S607). If the CFN of the UL synchronization frame is matched with the CFN of the DL synchronization frame, the base station controller reads the TOA(Time Of Arrival) value of the received frame, adjusts the TOA value so as to come close to the central value of an Rx window, and maintains the best DL frame transmission timing(S609).
Abstract:
PURPOSE: A method for retrieving a start slot in a high-speed mobile communication system is provided to enable a base station to assign a transmission delay minimal value of a receiving slot in case of a low-speed service and then to transmit the minimal value to a termination device, so that the termination device can recognize the minimal value, and to transmit data received after the minimal value to the termination device, thereby reducing power consumption and a processing load. CONSTITUTION: A transceiver of a termination device receives data from a slot i(600). The termination device decides whether a transmission delay minimal value of a session is '0'(610). If not, the transceiver stops analyzing the received data(620). An HARQ(Hybrid Automatic Repeat Request) portion of the termination device checks a CRC(630,640). If an error is generated from the received data, the termination device transmits an NACK(None Acknowledgement) response message to a base station(650). If the error is not generated, an ACK message is transmitted to the base station(660). An MAC portion of the termination device informs the transceiver of a start slot of a frame to be received, by using the minimal value(670).