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    • 31. 发明授权
    • Symbol synchronization method for OFDM-based wireless communication system
    • 基于OFDM的无线通信系统的符号同步方法
    • US07426204B2
    • 2008-09-16
    • US11173626
    • 2005-07-01
    • Sang-Hoon LeeMi-Sun DoSung-Hyun ChoYung-Soo Kim
    • Sang-Hoon LeeMi-Sun DoSung-Hyun ChoYung-Soo Kim
    • H04J3/06
    • H04L27/2602
    • Disclosed is a symbol synchronization method in an OFDM-based communication system which includes multiple access nodes supporting wireless connection of terminals, supports multi-connection of each terminal for the access nodes and performs synchronization by means of a cyclic prefix. The symbol synchronization method includes monitoring connection of a new access node; setting a number of times by which the new access node transmits equal symbols and a number of times by which at least one existing access node transmits the equal symbols when the connection of the new access node is detected; transmitting the equal symbols by the determined number of times by each access node; and performing synchronization by means of the symbols received from the access nodes by the terminal.
    • 公开了一种基于OFDM的通信系统中的符号同步方法,其包括支持终端的无线连接的多个接入节点,支持接入节点的每个终端的多连接,并通过循环前缀进行同步。 符号同步方法包括监视新接入节点的连接; 设置新接入节点在检测到新的接入节点的连接时发送相等符号的次数和多个次数,通过该次数至少一个现有的接入节点发送相等的符号; 通过每个接入节点发送所确定的相等符号次数; 并通过终端从接入节点接收的符号来执行同步。
    • 33. 发明授权
    • System and method for parallel transmission over multiple radio links
    • 通过多个无线电链路并行传输的系统和方法
    • US08400988B2
    • 2013-03-19
    • US11699545
    • 2007-01-30
    • Xiaoyu LiuMi-Sun DoYongsuk Park
    • Xiaoyu LiuMi-Sun DoYongsuk Park
    • H04W4/00H04M1/00
    • H04L1/1893H04L2001/0097
    • A radio communication system and transmission method using Multi-Radio Access (MRA) interfaces are provided. The radio communication system and method include a transmitter and a receiver having at least two Radio Access (RA) interfaces capable of communicating through different frequency spectrums, in which each of the transmitter and the receiver includes a multiple radio transmission layer for activating a multiple radio transmission entity for each upper layer service and transmitting data in packet units and an RA layer for activating at least one RA entity that manages the RA interface for the multiple radio transmission entity and dividing a packet into sub-packets for transmission and reception. In the transmission method, the multiple radio transmission entity of the transmitter receives a packet transmission success indicator for a specific packet from the RA entity of the transmitter and a next packet is transmitted upon receipt of the packet transmission success indicator. In the transmission method, a link having a good channel status is selected as a retransmission channel according to the status of an RA link of the lower layer, thereby allowing efficient and rapid data transmission.
    • 提供了一种使用多无线接入(MRA)接口的无线电通信系统和传输方法。 无线电通信系统和方法包括具有能够通过不同频谱通信的至少两个无线接入(RA)接口的发射机和接收机,其中发射机和接收机中的每一个包括用于激活多个无线电的多个无线电传输层 用于每个上层服务的传输实体和以分组单元发送数据,以及RA层,用于激活管理多个无线电传输实体的RA接口的至少一个RA实体,并将分组划分为用于传输和接收的子分组。 在传输方法中,发射机的多个无线传输实体从发射机的RA实体接收特定分组的分组传输成功指示符,并且在接收到分组传输成功指示符时发送下一个分组。 在发送方法中,根据下层的RA链路的状态,将具有良好的信道状态的链路选择为重发信道,从而实现高效,快速的数据传输。
    • 40. 发明申请
    • DATA TRANSMISSION SYSTEM FOR ASYNCHRONOUS TRANSMITTING DATA AND MAP INFORMATION
    • 用于异步发送数据和地图信息的数据传输系统
    • US20090011705A1
    • 2009-01-08
    • US12034751
    • 2008-02-21
    • Rakesh TAORIKi-Sun OhHyun Jeong KangMi-Sun Do
    • Rakesh TAORIKi-Sun OhHyun Jeong KangMi-Sun Do
    • H04B7/24
    • H04B7/2606H04B7/155H04B7/15542
    • A relay including a receiver to receive from a base station, data, a first data frame, and a second data frame, the first data frame includes data and data transmission time information associated with the data, and the second data frame includes map information corresponding to the data and map information transmission time information associated with the map information; a data frame computation unit to compute a third data frame and a fourth data frame, wherein the third data frame is used to transmit the data to a terminal and the fourth data frame is used to transmit the map information to the terminal; and a transmitter to transmit the data to the terminal using the map information when the third data frame is the same as the fourth data frame.
    • 一种包括从基站接收数据,第一数据帧和第二数据帧的接收器的中继器,所述第一数据帧包括与所述数据相关联的数据和数据传输时间信息,并且所述第二数据帧包括对应的映射信息 涉及与地图信息相关联的数据和地图信息传送时间信息; 数据帧计算单元,用于计算第三数据帧和第四数据帧,其中所述第三数据帧用于将数据发送到终端,并且所述第四数据帧用于将所述映射信息发送到所述终端; 以及当第三数据帧与第四数据帧相同时,使用映射信息将数据发送到终端的发射机。