公开(公告)号：US08675688B2

公开(公告)日：2014-03-18

申请号：US12613802

申请日：2009-11-06

Applicant: Cheon In Oh ,  Ho Yong Kang ,  Kyo Hoon Son ,  Nae Soo Kim

Inventor： Cheon In Oh ,  Ho Yong Kang ,  Kyo Hoon Son ,  Nae Soo Kim

IPC: H04J3/06

CPC classification number: H04W52/0235 ,  Y02D70/00

Abstract: Provided are an apparatus and method of transmitting and receiving a wake-up signal. The method of receiving a wake-up signal includes the following: operating a radio frequency (RF) receiving unit that receives a wireless signal through an antenna during an SFD detecting time, wherein the SFD detecting time is shorter than a predetermined SFD detecting time period, according to the predetermined SFD detecting time period and detecting a start of frame delimiter (SFD) to indicate that the received wireless signal is a wake-up signal to wake-up a node in a sleep mode; and detecting the wake-up signal by continuously operating the RF receiving unit when the SFD is detected. Power consumption that is used to receive the wake-up signal can be reduced.

Abstract translation: 提供了发送和接收唤醒信号的装置和方法。 接收唤醒信号的方法包括以下步骤：操作在SFD检测时间期间通过天线接收无线信号的射频（RF）接收单元，其中SFD检测时间短于预定的SFD检测时间段 根据预定的SFD检测时间周期，检测帧定界符（SFD）的开始，以指示所接收的无线信号是唤醒睡眠模式中的节点的唤醒信号; 以及当检测到SFD时通过连续操作RF接收单元来检测唤醒信号。 可以减少用于接收唤醒信号的功耗。

公开(公告)号：US20100150042A1

公开(公告)日：2010-06-17

申请号：US12613802

申请日：2009-11-06

Applicant: Cheon In Oh ,  Ho Yong Kang ,  Kyo Hoon Son ,  Nae Soo Kim

Inventor： Cheon In Oh ,  Ho Yong Kang ,  Kyo Hoon Son ,  Nae Soo Kim

IPC: H04W52/02

CPC classification number: H04W52/0235 ,  Y02D70/00

Abstract: Provided are an apparatus and method of transmitting and receiving a wake-up signal. The method of receiving a wake-up signal includes the following: operating a radio frequency (RF) receiving unit that receives a wireless signal through an antenna during an SFD detecting time, wherein the SFD detecting time is shorter than a predetermined SFD detecting time period, according to the predetermined SFD detecting time period and detecting a start of frame delimiter (SFD) to indicate that the received wireless signal is a wake-up signal to wake-up a node in a sleep mode; and detecting the wake-up signal by continuously operating the RF receiving unit when the SFD is detected. Power consumption that is used to receive the wake-up signal can be reduced.

Abstract translation: 提供了发送和接收唤醒信号的装置和方法。 接收唤醒信号的方法包括以下步骤：操作在SFD检测时间期间通过天线接收无线信号的射频（RF）接收单元，其中SFD检测时间短于预定的SFD检测时间段 根据预定的SFD检测时间周期，检测帧定界符（SFD）的开始，以指示所接收的无线信号是唤醒睡眠模式中的节点的唤醒信号; 以及当检测到SFD时通过连续操作RF接收单元来检测唤醒信号。 可以减少用于接收唤醒信号的功耗。

公开(公告)号：US20080137775A1

公开(公告)日：2008-06-12

申请号：US11931074

申请日：2007-10-31

Applicant: Tae Hoon KIM ,  In Ki LEE ,  Seung Hyun CHOI ,  Cheon In OH ,  Dae Ig CHANG ,  Ho Jin LEE ,  Sung Hoon LEE ,  Goon Seop LEE ,  Dong Hahk LEE ,  Jae Hwang YU

Inventor： Tae Hoon KIM ,  In Ki LEE ,  Seung Hyun CHOI ,  Cheon In OH ,  Dae Ig CHANG ,  Ho Jin LEE ,  Sung Hoon LEE ,  Goon Seop LEE ,  Dong Hahk LEE ,  Jae Hwang YU

IPC: H04L27/20 ,  H03D3/22 ,  H04L27/22

CPC classification number: H04L27/183

Abstract: Provided are a method and apparatus for hierarchical modulation and demodulation in a Digital Multimedia Broadcasting (DMB) system. The method for hierarchical modulation in a digital broadcast signal transmitter includes the steps of: receiving a first broadcast signal and a second broadcast signal from outside, and encoding the broadcast signals by a first method and a second method, respectively; synthesizing the encoded first and second broadcast signals; determining a modulation point using a constellation diagram of an I-Q plane corresponding to the synthesized signal; and hierarchically phase-shift modulating the synthesized signal using the determined modulation point. Here, in the I-Q plane, the modulation point is deviated by a predetermined deviation angle from a phase axis passing through a modulation point of the first broadcast signal and an origin of the I-Q plane.

Abstract translation: 提供了一种用于数字多媒体广播（DMB）系统中的分级调制和解调的方法和装置。 数字广播信号发射机中的分级调制方法包括以下步骤：从外部接收第一广播信号和第二广播信号，并分别通过第一种方法和第二种方法对广播信号进行编码; 合成编码的第一和第二广播信号; 使用与合成信号对应的I-Q平面的星座图确定调制点; 以及使用所确定的调制点对合成信号进行分层相移。 这里，在I-Q平面中，调制点偏离了通过第一广播信号的调制点的相位轴和I-Q平面的原点的预定偏差角。

公开(公告)号：US08774033B2

公开(公告)日：2014-07-08

申请号：US13247079

申请日：2011-09-28

Applicant: Cheon In Oh ,  Kyeong-Soo Han ,  Hyun Seo Oh ,  Hyun Kyun Choi

Inventor： Cheon In Oh ,  Kyeong-Soo Han ,  Hyun Seo Oh ,  Hyun Kyun Choi

IPC: G01R31/08

CPC classification number: H04W74/0833 ,  H04L45/3065 ,  H04W4/046 ,  H04W4/90 ,  H04W72/12

Abstract: In a vehicle communication system, a frame transmitting apparatus gives a transmission opportunity to an emergency frame received from an upper layer without EDCA (Enhanced Distributed Channel Access), and gives a transmission opportunity to a generic frame received from an upper layer through EDCA.

Abstract translation: 在车辆通信系统中，帧发送装置向没有EDCA（增强分布式信道接入）的上层接收到的紧急帧提供发送机会，并且通过EDCA向从上层接收的通用帧给出发送机会。

公开(公告)号：US20120127874A1

公开(公告)日：2012-05-24

申请号：US13247079

申请日：2011-09-28

Applicant: Cheon In OH ,  Kyeong-Soo HAN ,  Hyun Seo OH ,  Hyun Kyun CHOI

Inventor： Cheon In OH ,  Kyeong-Soo HAN ,  Hyun Seo OH ,  Hyun Kyun CHOI

IPC: H04W24/00 ,  H04L12/26 ,  H04B7/00

CPC classification number: H04W74/0833 ,  H04L45/3065 ,  H04W4/046 ,  H04W4/90 ,  H04W72/12

Abstract: In a vehicle communication system, a frame transmitting apparatus gives a transmission opportunity to an emergency frame received from an upper layer without EDCA (Enhanced Distributed Channel Access), and gives a transmission opportunity to a generic frame received from an upper layer through EDCA.

Abstract translation: 在车辆通信系统中，帧发送装置向没有EDCA（增强分布式信道接入）的上层接收到的紧急帧提供发送机会，并且通过EDCA向从上层接收的通用帧给出发送机会。

公开(公告)号：US07804918B2

公开(公告)日：2010-09-28

申请号：US11518218

申请日：2006-09-11

Applicant: Tae-Hoon Kim ,  Seung-Hyun Choi ,  Cheon-In Oh ,  Pan-Soo Kim ,  Dae-Ig Chang

Inventor： Tae-Hoon Kim ,  Seung-Hyun Choi ,  Cheon-In Oh ,  Pan-Soo Kim ,  Dae-Ig Chang

IPC: H04L27/00

CPC classification number: H04L27/183

Abstract: An apparatus for independently extracting streams from a hierarchically-modulated signal and performing a soft-decision, and a method thereof are provided. The apparatus includes: a synchronizing unit for receiving a hierarchically-modulated signal configured of an I-channel signal and a Q-channel signal from an external device and performing a synchronizing process on the received signal; a divaricating unit 410 for divaricating the synchronized signal configured of the I-channel signal and the Q-channel signal from the synchronizing unit; a high priority (HP) stream extracting and soft-decision unit for extracting a HP stream from one of the divaricated signals, and performing a soft-decision; a processing unit for processing the other of the divaricated signals to allow constellation points to be distinguished; and a low priority (LP) stream extracting and soft-decision unit for extracting a LP stream from the processed signal from the processing unit and performing a soft-decision.

Abstract translation: 提供一种用于从分层调制信号独立地提取流并执行软判决的装置及其方法。 该装置包括：同步单元，用于从外部装置接收由I信道信号和Q信道信号构成的分层调制信号，并对接收信号执行同步处理; 分离单元410，用于将由I信道信号构成的同步信号和来自同步单元的Q信道信号进行分解; 用于从分离信号中的一个提取HP流的高优先级（HP）流提取和软判决单元，并执行软判决; 处理单元，用于处理所述分离信号中的另一个以允许区分星座点; 以及用于从处理单元处理的信号中提取LP流并执行软判决的低优先级（LP）流提取和软判决单元。

公开(公告)号：US20070104294A1

公开(公告)日：2007-05-10

申请号：US11518218

申请日：2006-09-11

Applicant: Tae-Hoon Kim ,  Seung-Hyun Choi ,  Cheon-In Oh ,  Pan-Soo Kim ,  Dae-Ig Chang

Inventor： Tae-Hoon Kim ,  Seung-Hyun Choi ,  Cheon-In Oh ,  Pan-Soo Kim ,  Dae-Ig Chang

IPC: H04L27/22

CPC classification number: H04L27/183

Abstract: An apparatus for independently extracting streams from a hierarchically-modulated signal and performing a soft-decision, and a method thereof are provided. The apparatus includes: a synchronizing unit for receiving a hierarchically-modulated signal configured of an I-channel signal and a Q-channel signal from an external device and performing a synchronizing process on the received signal; a divaricating unit 410 for divaricating the synchronized signal configured of the I-channel signal and the Q-channel signal from the synchronizing unit; a high priority (HP) stream extracting and soft-decision unit for extracting a HP stream from one of the divaricated signals, and performing a soft-decision; a processing unit for processing the other of the divaricated signals to allow constellation points to be distinguished; and a low priority (LP) stream extracting and soft-decision unit for extracting a LP stream from the processed signal from the processing unit and performing a soft-decision.

Abstract translation: 提供一种用于从分层调制信号独立地提取流并执行软判决的装置及其方法。 该装置包括：同步单元，用于从外部装置接收由I信道信号和Q信道信号构成的分层调制信号，并对接收信号执行同步处理; 分离单元410，用于将由I信道信号构成的同步信号和来自同步单元的Q信道信号进行分解; 用于从分离信号中的一个提取HP流的高优先级（HP）流提取和软判决单元，并执行软判决; 处理单元，用于处理所述分离信号中的另一个以允许区分星座点; 以及用于从处理单元处理的信号中提取LP流并执行软判决的低优先级（LP）流提取和软判决单元。