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21. 发明申请

WO2010041804A2 CASSEGRAIN ANTENNA FOR HIGH GAIN 审中-公开
标题翻译： CASSEGRAIN天线高增益
公开(公告)号：WO2010041804A2
公开(公告)日：2010-04-15
申请号：PCT/KR2009002485
申请日：2009-05-12
申请人： KOREA ELECTRONICS TELECOMM , BYUN WOO-JIN , CHO YONG-HEUI , SONG MYUNG-SUN , KIM BONG-SU , KIM KWANG-SEON , KANG MIN-SOO
发明人： BYUN WOO-JIN , CHO YONG-HEUI , SONG MYUNG-SUN , KIM BONG-SU , KIM KWANG-SEON , KANG MIN-SOO
IPC分类号： H01Q19/18
CPC分类号： H01Q19/062 , H01Q3/46 , H01Q19/19 , H01Q19/193
摘要： Provided is a high gain Cassegrain antenna. The antenna includes a feed unit that radiates radio waves, a subreflector that faces a radiation surface of the feed unit and reflects the radiated radio waves, and a main reflector that has a plurality of hole scatterers of different depths facing the subreflector and reflecting again the radio waves reflected from the subreflector. Accordingly, it is possible to manufacture a high-gain broadband antenna at low costs.
摘要翻译：提供了一种高增益卡塞格伦天线。天线包括辐射无线电波的馈送单元，面向馈送单元的辐射表面并反射辐射无线电波的子反射器，以及主反射器，其具有面向子反射器的不同深度的多个散射体，并再次反射无线电波从次反射镜反射。因此，可以以低成本制造高增益宽带天线。

22. 发明申请

WO2009078606A1 CHANNEL SWITCHING APPARATUS AND METHOD OF A BASE STATION AND CHANNEL SWITCHING APPARATUS AND METHOD OF A TERMINAL BASED ON THE COGNITIVE RADIO SYSTEM 审中-公开
标题翻译：信道切换装置和基站和信道切换装置的方法和基于认知无线电系统的终端的方法
公开(公告)号：WO2009078606A1
公开(公告)日：2009-06-25
申请号：PCT/KR2008/007190
申请日：2008-12-05
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , KO, Gwangzeen , YOU, Sung-Jin , SONG, Myung-Sun , HWANG, Sung-Hyun , UM, Jung-Sun , KIM, Chang-Joo
发明人： KO, Gwangzeen , YOU, Sung-Jin , SONG, Myung-Sun , HWANG, Sung-Hyun , UM, Jung-Sun , KIM, Chang-Joo
IPC分类号： H04B7/155
CPC分类号： H04W48/12 , H04W16/14 , H04W36/06 , H04W72/042 , H04W72/0446
摘要： In a cognitive radio system, when communication in an operational channel is determined to be discontinued due to that an incumbent user (IU) entering the operational channel that is currently being used or due to that an excessive interference occurring in the operational channel, the operational channel is switched to a pre-arranged channel. However, since some parameters are different between the operational channel and the pre-arranged channel, an initialization procedure has to be performed to allow the cognitive radio system to be adapted to those some parameters. Since an initialization technique aiming for this situation is not developed yet, a conventional cognitive radio system uses a general initialization technique used to initially operate a system. However, the general initialization technique has to allow the system to be adapted to many parameters so that it takes a relatively long initialization time. A channel switching apparatus and method thereof of a base station, which allocates a slot for data exchange with each of a plurality of terminals in a frequency channel that is not used by the IU and thus performs communication, include transmitting a channel switching message for requesting to switch to a backup channel when a signal of the IU is sensed in the frequency channel; transmitting a beacon frame via the backup channel, wherein the beacon frame comprises allocation information about slots which are in the frequency channel and which are respectively allocated to each of the plurality of terminals; and allocating the slot for data exchange with each of the plurality of terminals to the backup channel according to the allocation information, and communicating with each of the plurality of terminals. By doing so, frequency resources between each of networks can be efficiently used, and convenience and efficiency with respect to network operation can be maximized.
摘要翻译：在认知无线电系统中，当由于现有用户（IU）进入当前正在使用的操作信道或由于在操作信道中发生的过度干扰而确定操作信道中的通信被中断时，操作通道切换到预先安排的通道。然而，由于操作信道和预先安排的信道之间的一些参数不同，因此必须执行初始化过程以允许认知无线电系统适应那些一些参数。由于尚未开发针对这种情况的初始化技术，传统的认知无线电系统使用用于初始操作系统的一般初始化技术。然而，一般的初始化技术必须允许系统适应许多参数，从而需要较长的初始化时间。一种基站的信道切换装置及其方法，其分配与IU未使用的频道中的多个终端中的每一个进行数据交换的时隙，从而进行通信，包括：发送用于请求的信道切换消息当在频率信道中感测到IU的信号时切换到备用信道; 经由所述备份信道发送信标帧，其中，所述信标帧包括关于处于所述频道中并且分别分配给所述多个终端中的每一个的时隙的分配信息; 以及根据所述分配信息将与所述多个终端中的每一个进行数据交换的时隙分配给备份信道，并与所述多个终端中的每一个进行通信。通过这样做，可以有效地利用每个网络之间的频率资源，并且可以最大限度地提高网络操作的便利性和效率。

23. 发明申请

WO2009075519A1 NETWORK COMMUNICATION METHOD AND NETWORK DEVICE USING PREAMBLE 审中-公开
标题翻译：网络通信方法和使用前缀的网络设备
公开(公告)号：WO2009075519A1
公开(公告)日：2009-06-18
申请号：PCT/KR2008/007298
申请日：2008-12-10
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , HWANG, Sung-Hyun , UM, Jung-Sun , KO, Gwangzeen , SONG, Myung-Sun , KIM, Chang-Joo
发明人： HWANG, Sung-Hyun , UM, Jung-Sun , KO, Gwangzeen , SONG, Myung-Sun , KIM, Chang-Joo
IPC分类号： H04B7/26
CPC分类号： H04W52/283 , H04L7/041 , H04W16/14 , H04W48/16 , H04W72/082
摘要： Provided are a network communication method and a network device using a preamble. According to the network communication method and the network device, network coexistence is easily achieved by using network identification transmitted in the preamble, and an unknown terminal, which has a low reception signal to noise ratio (SNR) and has not yet been connected to an existing network, is easily connected to the existing network.
摘要翻译：提供一种网络通信方法和使用前置码的网络设备。根据网络通信方式和网络设备，通过使用在前导码中发送的网络识别和具有低接收信噪比（SNR）并且尚未连接到前导码的未知终端容易地实现网络共存现有网络，轻松连接到现有网络。

24. 发明申请

WO2009072761A3 BEACON RE-BROADCASTING APPARATUS, BEACON RE-BROADCASTING METHOD, AND INITIAL ACCESS REQUEST METHOD IN WIRELESS NETWORK 审中-公开
公开(公告)号：WO2009072761A3
公开(公告)日：2009-06-11
申请号：PCT/KR2008/006805
申请日：2008-11-19
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , KO, Gwangzeen , SONG, Myung-Sun , HWANG, Sung-Hyun , UM, Jung-Sun , KIM, Chang-Joo , YOU, Sung-Jin
发明人： KO, Gwangzeen , SONG, Myung-Sun , HWANG, Sung-Hyun , UM, Jung-Sun , KIM, Chang-Joo , YOU, Sung-Jin
IPC分类号： H04L12/28
摘要： Provided are a beacon re-broadcasting apparatus, a beacon re-broadcasting method, and an initial access request method in a wireless network. In the re-broadcasting apparatus and method, a beacon frame including beacon information for communications in the wireless network and information on an echo beacon slot allocated for beacon re-broadcasting among time slots of a superframe is received from a management device for managing the wireless network in which a plurality of terminals communicated with each other through the superframe including time-divided time slots, and the beacon information is re-broadcasted during the echo beacon slot. Accordingly, the beacon information can be received in various environments, and the beacon information can be received to an adjacent network in addition to the corresponding network. Therefore, frequency resources can be shared and effectively used between networks, and convenience and efficiency in network operation can be maximized.

25. 发明申请

WO2008001977A1 TRANSMISSION METHOD AND APPARATUS FOR ALLOCATING SUBCHANNEL AND FORMING STATIONARY BEAM TO MAXIMIZE TRANSMISSION EFFICIENCY IN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING /MULTIPLE ACCESS BASED WIRELESS COMMUNICATION SYSTEM 审中-公开
标题翻译：用于分配子信道和形成静态光束的传输方法和装置，以最大限度地提高正交频分多路复用/多路访问无线通信系统的传输效率
公开(公告)号：WO2008001977A1
公开(公告)日：2008-01-03
申请号：PCT/KR2006/003876
申请日：2006-09-28
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , SONG, Myung-Sun , HWANG, Sung-Hyun , KO, Gwang-Zeen , CHANG, Kyung-Hi , PARK, Sung-Ho , KO, Sang-Jun , HEO, Joo , KIM, Jung-Ju
发明人： SONG, Myung-Sun , HWANG, Sung-Hyun , KO, Gwang-Zeen , CHANG, Kyung-Hi , PARK, Sung-Ho , KO, Sang-Jun , HEO, Joo , KIM, Jung-Ju
IPC分类号： H04L27/26
CPC分类号： H04L5/0058 , H04B7/0408 , H04L1/0003 , H04L1/0009 , H04L5/0023 , H04L5/0032 , H04L5/0037 , H04L5/0046
摘要： Provided are a transmission method and apparatus for allocating a subchannel and forming a stationary beam to maximize transmission efficiency in an OFDMA based wireless communication system. The method includes determining the subchannel for the equipment of each user based on the channel state of the equipment of each user, determining a beam index for the equipment of each user, based on location information and direction of arrival information of the equipment of each user, generating an OFDM symbol by mapping a modulation symbol corresponding to the equipment of each user to the determined subchannel, and transmitting the generated OFDM symbol to a wireless space by forming a beam following the determined beam index. Using the method, the equipment of each user can be allocated with an advantageous subchannel, can remove an interference signal at low cost, and can increase total throughput of an OFDMA system downlink.
摘要翻译：提供了一种用于分配子信道并形成固定波束以在基于OFDMA的无线通信系统中最大化传输效率的传输方法和装置。该方法包括基于每个用户的设备的信道状态确定每个用户的设备的子信道，基于每个用户的设备的位置信息和到达方向信息确定每个用户的设备的波束索引通过将与每个用户的设备相对应的调制符号映射到所确定的子信道来生成OFDM符号，并且通过形成遵循所确定的波束索引的波束来将生成的OFDM符号发送到无线空间。使用该方法，可以为每个用户的设备分配有利的子信道，可以以低成本去除干扰信号，并且可以增加OFDMA系统下行链路的总吞吐量。

26. 发明申请

WO2010071337A3 HYBRID BEACONING METHOD 审中-公开
标题翻译：混合网络方法
公开(公告)号：WO2010071337A3
公开(公告)日：2011-03-24
申请号：PCT/KR2009007485
申请日：2009-12-15
申请人： KOREA ELECTRONICS TELECOMM , KO GWANGZEEN , LEE MOON-WON , YOU SUNG-JIN , HWANG SUNG-HYUN , UM JUNG-SUN , SONG MYUNG-SUN , KIM CHANG-JOO
发明人： KO GWANGZEEN , LEE MOON-WON , YOU SUNG-JIN , HWANG SUNG-HYUN , UM JUNG-SUN , SONG MYUNG-SUN , KIM CHANG-JOO
IPC分类号： H04L12/28 , H04W74/02
CPC分类号： H04W48/08 , H04W88/06
摘要： Provided is a hybrid beaconing method in which a centralized beaconing scheme and a distributed beaconing scheme are combined. In the hybrid beaconing method, a beaconing scheme is converted according to a network condition, and a centralized beaconing scheme or a distributed beaconing scheme is used to maintain an optimum network status.
摘要翻译：提供了组合中央信标分配方案和分布式信标方案的混合信标方法。在混合信标方法中，根据网络条件转换信标方案，并使用集中式信标方案或分布式信标方案来维持最佳网络状态。

27. 发明申请

WO2010074385A1 METHOD AND APPARATUS FOR COMPRESSING FRAME 审中-公开
标题翻译：压缩框架的方法和装置
公开(公告)号：WO2010074385A1
公开(公告)日：2010-07-01
申请号：PCT/KR2009/004395
申请日：2009-08-06
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , YOU, Sung-Jin , KO, Gwangzeen , LEE, Moon-Won , UM, Jung-Sun , SONG, Myung-Sun
发明人： YOU, Sung-Jin , KO, Gwangzeen , LEE, Moon-Won , UM, Jung-Sun , SONG, Myung-Sun
IPC分类号： H04N7/30 , H03M7/30
CPC分类号： H03M7/30 , H04L69/04 , H04L69/22
摘要： Provided is a method and apparatus for efficiently transmitting and receiving a frame including a header and a payload in a communication system. If the number of repeated items in the content of a header of the frame is high, specific preambles are allocated to the repeated items and the repeated items are omitted. Accordingly, data transfer efficiency can be improved.
摘要翻译：提供了一种用于在通信系统中有效地发送和接收包括报头和有效载荷的帧的方法和装置。如果帧的头部的内容中的重复项目的数量高，则将特定的前导码分配给重复的项目，并且省略重复的项目。因此，可以提高数据传送效率。

28. 发明申请

WO2010071338A2 CHANNEL SENSING SCHEME USING NATURAL QUIET PERIOD IN COGNITIVE RADIO SYSTEM 审中-公开
标题翻译：使用自然无线电系统中的自然周期的信道感知方案
公开(公告)号：WO2010071338A2
公开(公告)日：2010-06-24
申请号：PCT/KR2009007487
申请日：2009-12-15
申请人： KOREA ELECTRONICS TELECOMM , KO GWANGZEEN , SONG MYUNG-SUN , YOU SUNG-JIN , KIM CHANG-JOO
发明人： KO GWANGZEEN , SONG MYUNG-SUN , YOU SUNG-JIN , KIM CHANG-JOO
IPC分类号： H04W72/02
CPC分类号： H04W28/06 , H04W16/14 , H04W74/0808
摘要： Provided is a method of sensing an operating channel by using a natural quiet period in a cognitive radio system. A requested QP is reduced by using a natural QP needed for communication that is intrinsic to a communication system, not by using a QP for cognitive radio.
摘要翻译：提供了一种通过在认知无线电系统中使用自然安静时段来感测操作信道的方法。通过使用通信系统固有的通信所需的自然QP，而不是通过使用用于认知无线电的QP来减少所请求的QP。

29. 发明申请

WO2010041804A3 CASSEGRAIN ANTENNA FOR HIGH GAIN 审中-公开
公开(公告)号：WO2010041804A3
公开(公告)日：2010-04-15
申请号：PCT/KR2009/002485
申请日：2009-05-12
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , BYUN, Woo-Jin , CHO, Yong-Heui , SONG, Myung-Sun , KIM, Bong-Su , KIM, Kwang-Seon , KANG, Min-Soo
发明人： BYUN, Woo-Jin , CHO, Yong-Heui , SONG, Myung-Sun , KIM, Bong-Su , KIM, Kwang-Seon , KANG, Min-Soo
IPC分类号： H01Q19/06 , H01Q19/19
摘要： Provided is a high gain Cassegrain antenna. The antenna includes a feed unit (130) that radiates radio waves, a subreflector (120) that faces a radiation surface of the feed unit and reflects the radiated radio waves, and a main reflector (1 10) that has a plurality of hole scatterers (1 1 1 ) of different depths facing the subreflector (120) and reflecting again the radio waves reflected from the subreflector (120). Accordingly, it is possible to manufacture a high-gain broadband antenna at low costs.

30. 发明申请

WO2009031825A3 METHOD AND SYSTEM FOR MANAGING CHANNEL SET FOR DYNAMIC CHANNEL ALLOCATION 审中-公开
标题翻译：用于管理动态信道分配的信道集的方法和系统
公开(公告)号：WO2009031825A3
公开(公告)日：2009-04-30
申请号：PCT/KR2008005202
申请日：2008-09-04
申请人： KOREA ELECTRONICS TELECOMM , PARK CHANGHYUN , SONG MYUNG-SUN , KIM SANG-WON , LIM SUNMIN
发明人： PARK CHANGHYUN , SONG MYUNG-SUN , KIM SANG-WON , LIM SUNMIN
IPC分类号： H04B7/26 , H04L12/28
CPC分类号： H04W72/00 , H04W16/14
摘要： Provided are a method and an apparatus for managing a channel set in a cognitive radio (CR) communication system. A CR communication system for dynamically allocating frequencies or channels manages vacant channels regularly so as to set an appropriate priority to usage of the vacant channels such that a channel set can be managed efficiently.
摘要翻译：提供了一种用于管理认知无线电（CR）通信系统中的信道集的方法和设备。用于动态分配频率或信道的CR通信系统定期管理空闲信道，以便为空闲信道的使用设置适当的优先级，从而可以有效地管理信道集。

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