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    • 1. 发明授权
    • Method and apparatus for changing communication link between source devices and sink devices
    • 用于改变源设备和宿设备之间的通信链路的方法和设备
    • US08340035B2
    • 2012-12-25
    • US12629468
    • 2009-12-02
    • Jae-min LeePil-soon ChoiChan-yeul KwonJi-seong OhJae-hwa Kim
    • Jae-min LeePil-soon ChoiChan-yeul KwonJi-seong OhJae-hwa Kim
    • H04Q7/00H04L12/28H04J3/26
    • H04L5/14H04N21/43615H04N21/43637
    • Provided is a method of changing a communication link between source devices and sink devices. The method includes in a first downlink period, broadcasting an uplink period allocation message to the sink devices and passive source devices by an active source device, which establishes a communication link with a primary sink device from among the sink devices; during a first uplink period, broadcasting by a primary passive source device a link set message for establishing a communication link with the primary sink device to all the source devices in the network; during a second downlink period, relaying the link set message to all the sink devices in the network, wherein the link set message is relayed by the active source device; and during a second uplink period, establishing a communication link between the primary sink device and the primary passive source device by the primary sink device.
    • 提供了一种改变源设备和宿设备之间的通信链路的方法。 该方法包括在第一下行链路周期中,通过有源源设备向宿设备和无源源设备广播上行链路周期分配消息,该有源源设备与宿设备之间建立与主宿设备的通信链路; 在第一上行链路周期期间,通过主要无源设备广播链路集消息,用于与主宿设备建立与网络中的所有源设备的通信链路; 在第二下行链路周期期间,将所述链路集消息中继到所述网络中的所有宿设备,其中所述链路集消息由所述活动源设备中继; 并且在第二上行链路周期期间,通过主宿设备建立主宿设备和主无源源设备之间的通信链路。
    • 3. 发明申请
    • Multiple input and multiple output communication apparatus and channel scanning method thereof
    • 多输入多输出通信装置及其信道扫描方法
    • US20060251025A1
    • 2006-11-09
    • US11325446
    • 2006-01-05
    • Chang-yeul KwonJae-hwa KimChil-yeul Yang
    • Chang-yeul KwonJae-hwa KimChil-yeul Yang
    • H04Q7/00
    • H04B7/0413H04B7/0686H04B7/0868
    • A MIMO communication apparatus and a channel scanning method thereof that can reduce a channel scanning time are provided. The channel scanning method includes receiving an input request for channel scanning, and scanning for a plurality of channels simultaneously by independently using a plurality of antennas in accordance with the input request. The apparatus includes a control unit which designates channels for scanning; a frame generating unit which generates a search frame if the channel scanning is active scanning; and a transceiver unit which includes a plurality of antennas and which assigns the channels designated by the control unit to the plurality of antennas, transmits the search frame generated by the frame generating unit through the plurality of antennas, and receives a response frame to the transmitted search frame; wherein the transceiver unit assigns different channels to the plurality of antennas, respectively.
    • 提供可以减少信道扫描时间的MIMO通信装置及其信道扫描方法。 信道扫描方法包括:根据输入请求,通过独立地使用多个天线,接收对信道扫描的输入请求,以及同时扫描多个信道。 该装置包括:指定用于扫描的通道的控制单元; 如果信道扫描是主动扫描,则生成搜索帧的帧产生单元; 以及包括多个天线并将由控制单元指定的频道分配给多个天线的收发单元,通过多个天线发送由帧生成单元生成的搜索帧,并且向所发送的接收单元接收响应帧 搜索框; 其中所述收发器单元分别向所述多个天线分配不同的信道。
    • 4. 发明授权
    • Apparatus and method for generating distributed traffic
    • 用于生成分布式业务的装置和方法
    • US06904487B2
    • 2005-06-07
    • US10356716
    • 2003-02-03
    • Jae-hwa KimIl-ju Na
    • Jae-hwa KimIl-ju Na
    • G06F13/18G06F13/00G06F13/14G06F13/42H04L12/26H04L12/40
    • G06F13/4282G06F2213/0012
    • An apparatus and method for generating distributed traffic in nodes coupled to a bus, wherein one node reads information on other nodes and generates traffic, includes a bus interface unit and a control unit receiving signals. The signals are transmitted from the nodes via the bus interface unit, to detect a bus reset and determine the number N of nodes coupled to the bus and a node ID number K of a node having the control unit. The information on the nodes is read in a predetermined order, starting from a reference node with node ID number K+M, wherein M is an integer larger than 1−K and smaller than N−K. The apparatus controls the order of generation of read transactions in each node for reading information from the other nodes coupled to a bus. The traffic load applied to each node is distributed to reduce an initial bus stabilization time.
    • 一种用于在耦合到总线的节点中产生分布式业务的装置和方法,其中一个节点读取其他节点上的信息并产生业务,包括总线接口单元和接收信号的控制单元。 信号经由总线接口单元从节点发送,以检测总线复位,并确定耦合到总线的节点数量N和具有控制单元的节点的节点ID号K。 从具有节点ID号K + M的参考节点开始,以预定顺序读取节点上的信息,其中M是大于1-K且小于N-K的整数。 该装置控制每个节点中读取事务的生成顺序,用于从耦合到总线的其他节点读取信息。 分配施加到每个节点的业务负载以减少初始总线稳定时间。
    • 8. 发明申请
    • Apparatus for and method of compensation for frequency offset and channel variation in MIMO-OFDM receiver
    • MIMO-OFDM接收机的频偏和信道变化补偿装置及补偿方法
    • US20060193392A1
    • 2006-08-31
    • US11330094
    • 2006-01-12
    • Jae-hwa KimTae-kon KimJae-ho Chung
    • Jae-hwa KimTae-kon KimJae-ho Chung
    • H04K1/10H04L27/06H03D1/04
    • H04L27/266H04L1/0631H04L1/0656H04L25/0206H04L27/261H04L27/2659H04L27/2675H04L27/2695
    • An apparatus for compensating for a frequency offset and a channel variation, includes: a frequency offset compensation unit estimating the frequency offset of receptions signals received via reception ends based on a final metric value of the reception signals, and a compensator compensating for the frequency offset of the receptions signals based on the estimated frequency offset; Fast Fourier Transformers (FFTs) converting reception signals having the compensated frequency offset into frequency domain reception signals; and a frequency offset and channel variation compensation unit estimating channel coefficients of signals output from the FFTs by sub carriers, compensating for a residual frequency offset and a channel variation of the reception signals from the FFTs based on pilot signals and the estimated channel coefficients, and detecting signals transmitted from transmission ends based on the reception signals having the compensated residual frequency offset and channel variation and the estimated channel coefficients.
    • 一种用于补偿频偏和信道变化的装置,包括:频偏补偿单元,基于接收信号的最终度量值,估计接收端接收到的接收信号的频率偏移,以及补偿频偏 基于估计的频率偏移的接收信号; 将具有经补偿的频偏的接收信号转换成频域接收信号的快速傅里叶变换器(FFT) 以及频率偏移和信道变化补偿单元,基于子载波估计从FFT输出的信号的信道系数,基于导频信号和所估计的信道系数补偿来自FFT的接收信号的残余频率偏移和信道变化,以及 基于具有经补偿的剩余频率偏移和信道变化的接收信号和所估计的信道系数来检测从发送结束发送的信号。