Abstract:
PURPOSE: An apparatus and a method for transmitting and receiving data in a wireless communication system using relay are provided to reduce wrong wireless channel measurements by excluding a preset interval of a relay reception sub-frame from a legacy terminal of a relay cell. CONSTITUTION: A sub-frame setting unit sets up a relay reception sub-frame(510), and a signaling unit signals the relay reception sub-frame to an MBSFN(Multicast Broadcast Single Frequency Network) sub-frame(512). When the current sub-frame is the relay reception sub-frame, a transceiver unit transmits a cell-specific reference signal or a control signal to a terminal during preset section of the relay reception sub-frame(514,516). The transmission unit receives a BS signal from a BS(Base Station) during a remaining interval of the reception sub-frame(518).
Abstract translation:目的:提供一种在使用中继的无线通信系统中发送和接收数据的装置和方法,以通过从中继小区的传统终端排除中继接收子帧的预设间隔来减少错误的无线信道测量。 构成:子帧设定单元建立中继接收子帧(510),信令单元向中继接收子帧发送信号到MBSFN(Multicast Broadcast Single Frequency Network,组播广播单频网络)子帧(512)。 当当前子帧是中继接收子帧时,收发器单元在中继接收子帧(514,516)的预设部分期间向终端发送小区特定参考信号或控制信号。 传输单元在接收子帧(518)的剩余间隔期间从BS(基站)接收BS信号。
Abstract:
PURPOSE: A method for allocating physical layer control information for MBMS and a method for receiving physical layer control information for MBMS therefore are provided to efficiently physical layer control information through the searching of the searching space in a terminal. CONSTITUTION: A terminal receives a physical layer control information for an MBMS(Multimedia Broadcast Multicast Service)(S801), and the physical layer control information is transmitted from a BS(Base Station). The physical layer control information is allocated to a preset search space, and the terminal searches the physical layer control information in the searching space. The terminal decodes the physical layer control information through an identifier(S803), and the identifier is allocated to the physical layer control information.
Abstract:
PURPOSE: A method for restoring an error of data is provided to efficiently restore an error by transmitting an error restoration request message from a terminal to a base station when an active message of a fixed assigned mode transmitted from the base station is not received to the terminal. CONSTITUTION: A radio resource assigning part(410) assigns a radio resource about a terminal. A control information generating part(420) generates control information with reference to the assigned radio resource. A transmitting part(430) transmits the control information to the terminal. A receiving part(440) receives a receiving confirmation message about the control information.
Abstract:
PURPOSE: An MBMS data transmission and receiving in packet based on cellular system are provided to improve the reception error correction efficiency of data by using the hybrid automatic retransmission request technology. CONSTITUTION: The base station transmits the control information through the MBMS dedicated control channel with terminals(301). The base station transmits data through the transmission channel(302). In the base station, error existence and nonexistence is responded from one or more terminal(303). The base station transmits the wireless resource information of retransmission data with terminals by using the down link control signal(304). The base station retransmits data through the transmission channel(305).
Abstract:
PURPOSE: A multi-cell cooperative communication system and a terminal device are provided to perform multi antenna communication with a terminal device through the cooperation among multiple cells. CONSTITUTION: Plural base station devices(120,130) include at least one first antenna, and a terminal device(110) contains at least one second antennas. The each base station device includes a same code book. Based on the code book, the each base station device generates a data signal after precoding at least one data symbol. Through the usage of the same radio resources, the each base station device transmits the data signal to the terminal device.
Abstract:
A method for establishing synchronization with a user equipment in a base station of a wireless communication system, comprising: transmitting random access channel information to the user equipment (S62); receiving a random access message corresponding to the random access channel information from the user equipment (S63); and transmitting a response message including information for establishing synchronization to the user equipment (S63), wherein the random access channel information includes random access channel allocation information.
Abstract:
본 발명은 직교 주파수 분할 다중 접속(Orthogonal Frequency Division Multiple Access: 이하, OFDMA) 시스템에서의 하향링크 스케줄링 정보 송/수신 방법 및 장치에 관한 것으로, 이 송신 방법은 OFDMA 시스템의 하향 링크 자원으로 구성된 자원블록들 중에서, 적어도 하나의 자원블록을 각 단말에 할당하는 할당단계; 상기 각 단말에 대해, 상기 할당된 자원블록 중에서 소정의 조건에 따라 자원블록을 선택하는 선택단계; 상기 각 단말에 대해, 상기 단말의 자원할당정보 및 상기 단말을 식별하기 위한 식별정보를 포함하는 스케줄링 정보를 생성하는 생성단계; 및 상기 각 단말에 대해, 선택된 자원블록을 이용하여 상기 단말의 스케줄링 정보를 전송하는 전송단계를 포함한다. 본 발명에 따르면, 스케줄링의 자유도를 줄이지 않으면서 스케줄링 정보의 전송에 사용되는 하향 링크 자원의 량을 줄일 수 있다. OFDM, OFDMA, 하향링크 제어정보, 스케줄링 정보, 자원할당 정보, 개별적 코딩, 그룹별 코딩, 비트맵
Abstract:
A down link reception indication method in a packet based mobile communications system which effectively controls the uplink is provided to maintain the synchronization of uplink effectively in case that the terminal does not maintain the synchronization of uplink. A base station assigns the arbitrary contact preamble index. A down link reception indication message including the allocated arbitrary contact preamble index is generated(205). The generated down link reception indication message is transmitted to the terminal(206). If the preamble signal designated with the arbitrary contact preamble index is received as a response, response information about random access is generated.
Abstract:
A method for transmitting and receiving broadcast and multicast service data in a packet based mobile communication system is provided to enhance error correction efficiency by applying an HARQ(Hybrid Automatic Repeat Request) scheme while transmitting MBMS data to plural terminals. MBMS data is transmitted to plural terminals in multiple cells. A service group ID for the MBMS(Multimedia Broadcast and Multicast Service) and shared feedback control information for respective cells are transmitted to the terminals through a control channel(301). The shared feedback control information for respective cells is commonly used for the terminals in the same cell. The MBMS data packet is transmitted to the terminal(302). When a response is received through the shared feedback channel from one of the terminals, wireless resource information of the data to be retransmitted through a downlink control channel is transmitted to the terminals(304). The retransmission data is transmitted to the terminals(305).
Abstract:
A method for transmitting and receiving packet data in a packet-based wireless communication system is provided to minimize an amount of scheduling information to be transmitted through the wireless resources. A base station broadcasts the system information including scheduling policy, persistence allocation or dynamic allocation through a broadcasting channel(201). The base station designates the corresponding group of the terminal, allocates and notifies the group identifier together with the inherent terminal identifier to the terminal(203) at the call setting procedure. At this time, the base station designates the scheduling property relating to the corresponding terminal through an RRC(Radio Resource Control) connection set procedure. The RRC connection procedure between the base station and the terminal is performed and thereafter the base station allocates the radio resources block for transmitting the down-link packet data and sets the radio RB(Resources Block) identifier(204). Thereafter, the base station transmits the control signal block to the terminal according to the designated scheduling pattern(205).