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公开(公告)号：KR1020160110892A
公开(公告)日：2016-09-22
申请号：KR1020160025910
申请日：2016-03-03
Applicant: 한국전자통신연구원
Abstract: 통신시스템의무선기기는백오프스테이지에따라서결정되는경쟁윈도우크기에해당하는경쟁윈도우구간에서랜덤하게백오프카운터를선택하고, 무선채널이유휴상태일때 상기백오프카운터를감소시키면서상기백오프카운터가 0이되면패킷전송을시도하며, 제1 설정조건에따라서상기백오프스테이지를 1씩증가시키면서상기경쟁윈도우크기를증가시킨다. 이때경쟁윈도우크기는상기백오프스테이지가증가함에따라아래로오목한증가(concave down increasing) 형태를가진다.
Abstract translation: 在用于确定通信系统中的竞争窗口大小的方法中，通信系统的无线设备相对于根据退避阶段确定的竞争窗口的大小在竞争窗口部分中随机选择退避计数器; 当无线信道处于空闲状态时，减少退避计数器，如果退避计数器变为零，则尝试分组传输; 并且通过基于第一设置条件逐个增加退避阶段来增加争用窗口的大小。 此时，随着退避阶段的增加，争用窗口的大小变成凹下的增大形状。
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公开(公告)号：KR1020160101440A
公开(公告)日：2016-08-25
申请号：KR1020150023997
申请日：2015-02-17
Applicant: 한국전자통신연구원
CPC classification number: H04W72/1215 , H04W72/1226 , H04W72/082 , H04W72/02 , H04W72/0453 , H04W88/06
Abstract: 본발명은사용자단말의각각서비스모듈에서주파수대역의선택과송신스펙트럼타입의선택을효과적으로수행하여, 비면허대역에서 LTE-U 서비스와 WiFi 서비스등 이기종서비스가신호간섭없이상호공존하도록동시에제공함으로써, 무선통신망의성능을개선할수 있는사용자단말의이기종서비스상호공존을위한장치및 방법에관한것이다.
Abstract translation: 本发明涉及一种用于用户终端的异构业务共存的装置和方法，用于有效地选择用户终端的每个服务模块中的频带和传输频谱的类型，并且同时提供异构业务 作为无授权频带中的LTE-U服务，Wi-Fi服务等，而不会在相互共存之间的信号之间的干扰，从而提高无线通信网络的性能。
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公开(公告)号：KR101612289B1
公开(公告)日：2016-04-14
申请号：KR1020100040129
申请日：2010-04-29
Applicant: 한국전자통신연구원
IPC: H04W52/28
CPC classification number: H04W52/04
Abstract: 본발명은송신전력제어방법및 장치에관한것이다. 본발명의일 실시예에의한인지무선디바이스의송신전력제어방법은, 인지무선디바이스의인접채널또는인접셀을점유하는인가사용자또는비인가사용자에대한 CR 환경정보를획득하는단계, CR 환경정보를이용하여인지무선디바이스의송신전력값을결정하는단계및 송신전력값을포함하는송신전력제어정보를생성하는단계를포함한다. 본발명에의하면인지무선디바이스의신뢰성있는통신을보장하는동시에인가된사용자에대한간섭을최소화할수 있는효과가있다.
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公开(公告)号：KR1020150050308A
公开(公告)日：2015-05-08
申请号：KR1020140025656
申请日：2014-03-04
Applicant: 한국전자통신연구원
IPC: H04W72/04
CPC classification number: H04W72/0493 , H04B7/15557 , H04W88/08
Abstract: TDD 시스템에서 GP를결정하는방법및 장치가개시되어있다. TDD(time division duplexing) 기반의통신방법은기지국이단말과상기기지국사이의거리정보를기반으로보호구간을결정하는단계, 상기기지국이상기결정된보호구간을기반으로상기단말로하향링크전송을수행하는단계를포함하되, 상기보호구간은디폴트보호구간모드, 감소보호구간모드및 제로보호구간모드중 하나를기반으로결정되고, 상기감소보호구간모드는상기디폴트보호구간모드를기반으로설정되는디폴트보호구간보다짧은보호구간인감소보호구간을설정하는모드이고, 상기제로보호구간모드는상기보호구간의길이를 0으로설정하는모드일수 있다.
Abstract translation: 公开了一种用于确定时分双工（TDD）系统中的保护时段（GP）的方法和装置。 基于时分双工（TDD）的通信方法包括：基站根据终端与基站之间的距离的信息确定保护周期; 并且基于所确定的保护周期，由所述基站执行向所述终端的下行链路传输，其中所述保护周期是基于默认保护周期模式，减小的保护周期模式和零保护周期模式之一来确定的，以及 减小的保护周期模式是用于设置减小的保护周期的模式，其比基于默认保护周期模式设置的默认保护周期短，并且零保护周期模式是用于将保护周期长度设置为 零。
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Patent Agency Ranking
公开(公告)号：KR1020140093325A
公开(公告)日：2014-07-28
申请号：KR1020130004069
申请日：2013-01-14
Applicant: 한국전자통신연구원
IPC: H04W24/02
CPC classification number: H04L5/006 , H04L5/0023 , H04L5/0035 , H04L5/0085 , H04L27/0006
Abstract: A cognitive radio apparatus according to an embodiment comprises an estimation module for generating a channel estimation signal transmitted to a random reception apparatus located in the random channel when the random channel is selected among multiple channels to execute communication in a cognitive radio network; a communication module for transmitting the channel estimation signal to the random reception apparatus and for receiving a channel response signal from the random reception apparatus; and a control module for controlling the communication module to transmit a communication signal set for the random channel or a variable communication signal for converting the communication signal to the random reception apparatus when a result on which the random channel is located in a deep fading section is determined based on the channel response signal.
Abstract translation: 根据实施例的认知无线电设备包括估计模块，用于当在多个信道中选择随机信道以在认知无线电网络中执行通信时，生成发送到位于随机信道中的随机接收设备的信道估计信号; 通信模块，用于将所述信道估计信号发送到所述随机接收装置，并用于从所述随机接收装置接收信道响应信号; 以及控制模块，用于当所述随机信道位于深衰落部分中的结果为止时，控制所述通信模块发送用于所述随机信道的通信信号集或用于将所述通信信号转换到所述随机接收装置的可变通信信号， 基于信道响应信号确定。
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57.发明公开인지 무선 통신 시스템에서 데이터 송수신용 안테나 및 스펙트럼 센싱용 안테나를 구비한 통신 장치 및 그 통신 장치의 안테나 스위칭 방법 无效具有用于发送/接收用于感知无线电通信系统中的感测频谱的数据和天线的天线的通信装置，以及用于在其中切换天线的方法
公开(公告)号：KR1020130031983A
公开(公告)日：2013-04-01
申请号：KR1020110095593
申请日：2011-09-22
Applicant: 한국전자통신연구원
CPC classification number: H04B7/0825 , H04B7/0808 , H04B7/0814
Abstract: PURPOSE: A communication device including a spectrum sensing antenna and a data transceiving antenna in a cognitive radio communication system and an antenna switching method in the communication device are provided to select an optimal antenna from antennas according to the quality of a currently performing channel. CONSTITUTION: A quality measuring unit(851) measures information related to the quality of a channel different from a channel between a communication device and another communication device based on data received from the communication device through a primary antenna or a secondary antenna. A determining unit(852) determines whether the channel has a better state than another channel based on the measured information. If the state of the channel is not better than another channel based on the determined result, a control unit(853) controls a switch to mutually change connection targets of the primary antenna and the secondary antenna. [Reference numerals] (810) Primary antenna; (820) Secondary antenna; (830) Data transceiver; (840) Spectrum generator; (850) Switching processor; (851) Quality measuring unit; (852) Determining unit; (853) Control unit;
Abstract translation: 目的：提供一种在认知无线电通信系统中包括频谱感测天线和数据收发天线的通信设备以及通信设备中的天线切换方法，以根据当前正在进行的信道的质量从天线中选择最佳天线。 构成：质量测量单元（851）基于通过主天线或辅助天线从通信设备接收的数据来测量与通信设备与另一通信设备之间的信道不同的信道质量的信息。 确定单元（852）基于所测量的信息来确定信道是否具有比另一信道更好的状态。 如果基于所确定的结果，信道的状态不比另一信道更好，则控制单元（853）控制开关以相互改变主天线和次天线的连接目标。 （附图标记）（810）主天线; （820）二次天线; （830）数据收发器; （840）频谱发生器; （850）切换处理器; （851）质量测量单位; （852）确定单位; （853）控制单元;
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公开(公告)号：KR1020100118958A
公开(公告)日：2010-11-08
申请号：KR1020100040129
申请日：2010-04-29
Applicant: 한국전자통신연구원
IPC: H04W52/28
CPC classification number: H04W52/04
Abstract: PURPOSE: A method and a device for controlling transmission power of a cognitive radio device are provided to guarantee reliable communication of the cognitive radio device, thereby minimizing interference for a licensed user. CONSTITUTION: A CR(Cognitive Radio) device obtains CR environment information for a licensed user or an unlicensed user which occupies an adjacent cell or an adjacent channel of the CR device(802). The CR device determines a transmission power value by the CR environment information(804). The CR device generates transmission power control information including the transmission power value(806). The CR device controls transmission power by the transmission power control information(808).
Abstract translation: 目的：提供一种用于控制认知无线电设备的发射功率的方法和设备，以保证认知无线电设备的可靠通信，从而最大限度地减少许可用户的干扰。 构成：CR（认知无线电）装置获得占用CR装置的相邻小区或相邻信道的许可用户或非许可用户的CR环境信息（802）。 CR设备通过CR环境信息确定发送功率值（804）。 CR设备产生包括发送功率值（806）的发送功率控制信息。 CR设备通过发送功率控制信息来控制发送功率（808）。
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公开(公告)号：KR1020100072691A
公开(公告)日：2010-07-01
申请号：KR1020080131178
申请日：2008-12-22
Applicant: 한국전자통신연구원
CPC classification number: H04L27/2692 , H04L27/2614 , H04L27/2628
Abstract: PURPOSE: A preamble generation device, a method thereof, a preamble receiving device and a method thereof are provided to improve data transfer rate as the size of the address information by detecting transmitting and receiving address to preamble. CONSTITUTION: A shift register input unit(110) inputs at least one among the address of the source node transmitting a frame and address of the receiving node receiving a frame to a shift register. An address sequence generation unit(120) generates address sequence of subcarrier number size of the preamble of the frame in the shift register based on the output value shifted by each clock. A preamble transform unit(130) changes the produced address sequence through the IFFT into the time domain signal of preamble. The preamble transform unit transforms calculated the modular(modulo) -2 to the IFFT by adding the produced address sequence based on the received node address and the produced address sequence based on the transmission node address.
Abstract translation: 目的：提供前导码生成装置，其方法，前同步码接收装置及其方法，以通过检测对前导码的发送和接收地址来提高作为地址信息的大小的数据传输速率。 构成：移位寄存器输入单元（110）将发送帧的源节点的地址和接收帧的接收节点的地址中的至少一个输入到移位寄存器。 地址序列生成单元基于由每个时钟偏移的输出值，生成移位寄存器中的帧的前导码的子载波号码的地址序列。 前导码变换单元（130）将产生的地址序列通过IFFT改变为前导码的时域信号。 前导码变换单元通过基于接收到的节点地址和所产生的地址序列，基于发送节点地址添加所产生的地址序列，将计算出的模（mod）-2转换为IFFT。
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公开(公告)号：KR100936609B1
公开(公告)日：2010-01-13
申请号：KR1020070121504
申请日：2007-11-27
Applicant: 한국전자통신연구원 , 경희대학교 산학협력단
Abstract: 본 발명은 무선통신시스템에서 피드백 전송 및 적응 전송 방법에 관한 것으로서, 피드백 양을 줄이면서 다중 사용자의 밴드-AMC 모드 및 다이버시티 모드를 지원함으로써, 데이터 전송 효율을 증가시킬 수 있는 채널품질정보 피드백 전송 및 적응 전송 방법에 관한 것이다.
본 발명에 따른 피드백 전송 및 적응 전송 방법은, 사용자 단말이 수신 신호로부터 채널품질정보를 도출하여 채널품질정보를 피드백할 부밴드를 선택하는 단계와, 사용자 단말이 부밴드의 선택 여부에 따라서 채널품질정보를 기지국으로 피드백하는 단계와, 기지국이 피드백된 채널품질정보에 의하여 전송 모드를 결정하여 결정된 전송 모드에 따른 적응 전송 파형을 송신하는 단계와, 사용자 단말이 기지국이 송신한 적응 전송 파형을 수신하고 결정된 전송 모드에 따라서 수신된 파형을 복원하는 단계를 포함한다.
무선통신, 피드백
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