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    • 13. 发明公开
    • 무선 애드혹 네트워크에서의 전력 제어 방법
    • 无线AD-HOC网络中控制功率的方法
    • KR1020120086547A
    • 2012-08-03
    • KR1020110007856
    • 2011-01-26
    • 한국전자통신연구원
    • 예충일안동현
    • H04W52/08H04W52/50H04W72/04H04W84/18H04L5/00
    • H04W52/08H04L5/0007H04L5/0037H04W52/50H04W72/0446H04W84/18Y02D70/00
    • PURPOSE: A power control method in a wireless ad-hoc network is provided to eliminate inference on power control for sensing the channel occupation of adjacent nodes in a wireless network. CONSTITUTION: A node determines the initial transmission power of data subcarriers in a PDU(Protocol Data Unit) slot and an ACK(Acknowledgement) slot(S610). The node transmits the data subcarriers using the initial transmission power. The node transmits pilot subcarriers of the PDU slot and the ACK slot using the fixed power(S620). The node determines the transmission power of the data subcarriers in the PDU slot and the ACK slot by controlling closed loop power(S630). The node transmits the data subcarriers using transmission power determined in the frame. The node transmits the pilot subcarriers using the fixed power(S640).
    • 目的:提供无线自组织网络中的功率控制方法,以消除对无线网络中相邻节点的信道占用的功率控制的推断。 构成:节点确定PDU(协议数据单元)时隙和ACK(确认)时隙中的数据子载波的初始发送功率(S610)。 节点使用初始发送功率发送数据子载波。 节点使用固定功率发送PDU时隙的导频子载波和ACK时隙(S620)。 该节点通过控制闭环功率来确定PDU时隙中的数据子载波的发送功率和ACK时隙(S630)。 节点使用在帧中确定的发射功率来发射数据子载波。 节点使用固定功率发送导频子载波(S640)。
    • 17. 发明公开
    • 동기 채널 송수신 방법 및 장치
    • 用于传输和接收同步信道的装置和方法
    • KR1020090115650A
    • 2009-11-05
    • KR1020080126101
    • 2008-12-11
    • 한국전자통신연구원
    • 이승준예충일권동승
    • H04L7/00H04L27/26
    • H04L5/0048H04L5/0007H04L5/0023H04L5/005
    • PURPOSE: An apparatus and a method for transmitting and receiving a synchronization channel are provided to improve identifier estimation performance under a channel environmental having a severe frequency selectivity. CONSTITUTION: In a apparatus and a method for transmitting and receiving a synchronization channel, a block numerical progression unit produces a plurality of block progression, and transmits the block progression to a synchronous signal generator(S210). The plural subcarriers of the synchronous channel are classified into the plural blocks, and progressions are allocated to each block. A synchronous signal generator produces a synchronizing signal by assigning the plural block progression to the subcarrier of the synchronous channel(S220). A frequency mapping unit generates a downlink frame by mapping the synchronizing signal and transmission data to a time and frequency domain(S230). A transmission unit transmits the downlink frame of the frequency mapping through a transmission antenna(S240).
    • 目的:提供用于发送和接收同步信道的装置和方法,以改善具有严重频率选择性的信道环境下的标识符估计性能。 构成:在用于发送和接收同步信道的装置和方法中,块数值进行单元产生多个块进程,并将块进程发送到同步信号发生器(S210)。 同步信道的多个子载波被分类为多个块,并且向每个块分配进展。 同步信号发生器通过将多个块进程分配给同步信道的子载波来产生同步信号(S220)。 频率映射单元通过将同步信号和发送数据映射到时域和频域来生成下行链路帧(S230)。 发送单元通过发送天线发送频率映射的下行链路帧(S240)。
    • 18. 发明公开
    • 빔 포밍 방법 및 그 장치
    • BEAMFORMING方法和装置
    • KR1020080053009A
    • 2008-06-12
    • KR1020060124895
    • 2006-12-08
    • 한국전자통신연구원삼성전자주식회사
    • 예충일권동승안지환
    • H04L27/26H04B7/04H04B7/02
    • H04B7/086H04B7/0695H04W74/00H04W88/08H04B7/0617H04B7/0697H04W16/28
    • A beamforming method and an apparatus thereof are provided to improve a detection performance for a packet for a network access transmitted from a terminal before the terminal enters into the network by providing downlink transmission beamforming and uplink reception beamforming schemes. A beamforming apparatus includes at least one receiving antenna(101-104), a data collection unit(201-204), a weight value vector applying unit(301-304), and a detection unit(401-404). The receiving antenna receives a signal from a terminal. The data collection unit acquires and outputs a signal received through the receiving antenna. The weight value vector applying unit sequentially applies and outputs at least one weight value vector to the signal outputted from the data collection unit. The detection unit detects the signal outputted from the weight value vector applying unit according to a weight value.
    • 提供了一种波束形成方法及其装置,用于通过提供下行链路传输波束形成和上行链路接收波束成形方案来提高从终端进入网络之前从终端发送的网络接入的分组的检测性能。 波束成形装置包括至少一个接收天线(101-104),数据收集单元(201-204),权重值向量施加单元(301-304)和检测单元(401-404)。 接收天线从终端接收信号。 数据采集​​单元获取并输出通过接收天线接收的信号。 重量值向量施加单元对从数据收集单元输出的信号顺序地施加并输出至少一个权重值向量。 检测单元根据权重值检测从权重值向量施加单元输出的信号。