公开(公告)号：KR1020120126447A

公开(公告)日：2012-11-21

申请号：KR1020110044226

申请日：2011-05-11

Applicant: 한국전자통신연구원 ,  강원대학교산학협력단

Inventor： 신우람 ,  예충일 ,  김지형 ,  김근영 ,  안동현 ,  임광재 ,  권동승 ,  이승준

IPC: H04W72/04 ,  H04J11/00 ,  H04B15/00

CPC classification number: H04W72/0446 ,  H04W56/00 ,  H04W72/082 ,  H04W84/18

Abstract: PURPOSE: A resource allocation method in a wireless communication system is provided to reduce interference between users by allocating a slot having the highest performance index among unoccupied slots in an OFDMA(Orthogonal Frequency Division Multiple Access) type ad-hoc system to a terminal. CONSTITUTION: A resource allocating device senses a subcarrier already being used by the other terminal among all of subcarriers(S410). The resource allocating device obtains a time error, a frequency error, and receiving power information of the occupied subcarrier(S420). The resource allocating device calculates an SINR(Signal-to-Interference plus Noise Ratio) of unoccupied subcarriers(S430). The resource allocating device allocates a subcarrier having the highest SINR among the unoccupied subcarriers to a terminal(S440). [Reference numerals] (S410) Sensing a subcarrier being used; (S420) Acquiring a time error, a frequency error, and receiving power information of the occupied subcarrier; (S430) Calculating SINR of unoccupied subcarriers; (S440) Selecting and allocating a subcarrier with the maximum SINR

Abstract translation: 目的：提供一种无线通信系统中的资源分配方法，用于通过在OFDMA（正交频分多址）类型自组织系统中的未占用时隙之间分配具有最高性能指标的时隙来减少用户之间的干扰。 构成：资源分配装置检测所有子载波中已经被其他终端使用的副载波（S410）。 资源分配装置获取所占用的副载波的时间误差，频率误差和接收功率信息（S420）。 资源分配装置计算未占用子载波的SINR（信号与干扰加噪声比）（S430）。 资源分配装置将未占用副载波中具有最高SINR的子载波分配给终端（S440）。 （附图标记）（S410）感测正在使用的副载波; （S420）获取所占用的副载波的时间误差，频率误差和接收功率信息; （S430）计算未占用子载波的SINR; （S440）选择并分配具有最大SINR的子载波

公开(公告)号：KR1020120067921A

公开(公告)日：2012-06-26

申请号：KR1020110064855

申请日：2011-06-30

Applicant: 한국전자통신연구원

Inventor： 신우람 ,  김현재 ,  이안석 ,  김근영 ,  임광재 ,  권동승

IPC: H04L12/28 ,  H04J11/00 ,  H04W74/00 ,  H04W84/18

CPC classification number: H04W28/021 ,  H04J11/00 ,  H04W48/08 ,  H04W84/18

Abstract: PURPOSE: Access controlling method and device in a wireless communication system are provided to improve the reliability and the safety of network by avoiding the collision of neighing nodes in orthogonal frequency division multiple access(OFDMA)-based wireless mesh network. CONSTITUTION: Information with respect to following transmission timings of a 1-hop node and a 2-hop node is received through the 1-hop node(S501). The information calculates the following transmission time interval of the 1-hop node and the 2-hop node(S502). Based on the following transmission time interval, a sub-frame and a sub-channel corresponding to the following transmission timings are determined(S503 to S509). Information with respect to the following transmission timing with information with respect to the transmission timing of the 1-hop node is transmitted to the 1-hop node.

Abstract translation: 目的：提供无线通信系统中的访问控制方法和设备，通过避免基于正交频分多址（OFDMA）的无线网状网络中的相邻节点的冲突来提高网络的可靠性和安全性。 构成：通过1跳节点接收关于1跳节点和2跳节点的以下发送定时的信息（S501）。 该信息计算出1跳节点和2跳节点的以下传输时间间隔（S502）。 基于以下发送时间间隔，确定与以下发送定时对应的子帧和子信道（S503〜S509）。 关于具有关于1跳节点的发送定时的信息的以下发送定时的信息被发送到1跳节点。

公开(公告)号：KR1020090117595A

公开(公告)日：2009-11-12

申请号：KR1020080130231

申请日：2008-12-19

Applicant: 한국전자통신연구원

Inventor： 장갑석 ,  김성락 ,  김영훈 ,  김근영 ,  원석호

IPC: H04L7/02 ,  H04W56/00 ,  H04W4/08

CPC classification number: H04L27/2662 ,  H04L5/0048 ,  H04L5/0053 ,  H04L27/2613 ,  H04L27/2614 ,  H04L27/2657 ,  H04L27/2684

Abstract: PURPOSE: An apparatus and a method for obtaining symbol synchronization robust to frequency offset in a wireless communication system are provided to reduce complexity of a receiver for obtaining symbol synchronization by assigning a synchronous pattern for obtaining symbol synchronization to a synchronous channel. CONSTITUTION: A sequence generating part(101) generates a base sequence for obtaining symbol synchronization. A synchronous pattern generating part(102) generates a transformation sequence based on the base sequence. The synchronous pattern generating part generates a synchronous pattern by assembling the transformation sequence and the base sequence. A frequency mapping part(103) generates a transmitting frame by mapping transmitting information to a time and frequency domain based on the synchronous pattern. A transmitting part(104) transmits the transmitting frame. A synchronous pattern generating part generates the synchronous pattern by variously setting ratio between the base sequence and the transformation sequence included in the synchronous pattern.

Abstract translation: 目的：提供一种用于在无线通信系统中获得对频偏的鲁棒的符号同步的装置和方法，以通过为同步信道分配用于获得符号同步的同步模式来降低用于获得符号同步的接收机的复杂性。 构成：序列生成部（101）生成用于获得符号同步的基序列。 同步模式生成部（102）基于基本序列生成变换序列。 同步模式生成部件通过组合变换序列和基本序列来生成同步模式。 频率映射部（103）通过基于同步模式将发送信息映射到时域和频域来生成发送帧。 发送部（104）发送发送帧。 同步码型生成部通过基准序列和同步码型中包含的变换序列的不同设定比例来生成同步码型。