公开(公告)号：US20150085846A1

公开(公告)日：2015-03-26

申请号：US14072874

申请日：2013-11-06

Applicant: AJOU University Industry-Academic Cooperation Foundation ,  Electronics and Telecommunications Research Institute

Inventor： Cheolhyo LEE ,  Kyung-yul CHEON ,  Chang-Joo KIM ,  Young-Bae XO ,  Jaebeom KIM

IPC: H04W40/24

CPC classification number: H04W40/248 ,  H04W84/18

Abstract: A radio access method for use in a radio access device in cognitive radio ad-hoc networks, the radio access method comprising: comparing additional information about neighboring radio access devices, which exist in the cognitive radio ad-hoc networks, in a second layer of the radio access device with additional information about the neighboring radio access devices in a third layer of the radio access device in the cognitive radio ad-hoc networks; and generating a routing control message when the additional information of the second layer is different from the additional information of the third layer to broadcast the routing control message.

Abstract translation: 一种用于认知无线电自组织网络中的无线电接入设备中的无线电接入方法，所述无线接入方法包括：将存在于认知无线自组织网络中的相邻无线电接入设备的附加信息与第二层 所述无线电接入设备具有关于所述认知无线自组织网络中的所述无线电接入设备的第三层中的所述相邻无线电接入设备的附加信息; 以及当所述第二层的附加信息不同于所述第三层的附加信息以广播所述路由控制消息时，生成路由控制消息。

公开(公告)号：US20140376493A1

公开(公告)日：2014-12-25

申请号：US14478366

申请日：2014-09-05

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sung-Hyun HWANG ,  Chang-Joo KIM ,  Myung-Sun SONG ,  Jung-Sun UM

IPC: H04W72/04

CPC classification number: H04W72/0406 ,  H04L5/0007 ,  H04L5/0048

Abstract: Provided is a method of generating a pilot pattern capable of perform adaptive channel estimation, and a method and apparatus of a base station and a method and apparatus of a terminal using the pilot pattern.The pilot pattern selects pilot symbol positions based on distances from pilots of previous orthogonal frequency division multiple access (OFDMA) symbols to a subcarrier position of a current OFDMA symbol in the frequency domain and the time domain, so that a low pilot density is maintained so as to effectively transmit data, and stable channel estimation performance can be obtained even in a bad channel environment.In addition, the minimum burst allocation size is determined according to the channel environment between the base station and the terminal, guaranteeing channel estimation performance suitable for the channel environment, and improving granularity, channel estimation latency, and channel estimation memory size.

Abstract translation: 提供了一种生成能够执行自适应信道估计的导频模式的方法，以及基站的方法和装置以及使用导频模式的终端的方法和装置。 导频模式基于从先前的正交频分多址（OFDMA）符号的导频到频域和时域中的当前OFDMA符号的子载波位置的距离来选择导频符号位置，从而保持低导频密度 为了有效地发送数据，即使在恶劣的信道环境中也可以获得稳定的信道估计性能。 另外，根据基站和终端之间的信道环境确定最小突发分配大小，保证适合信道环境的信道估计性能，提高粒度，信道估计延迟和信道估计存储器大小。

公开(公告)号：US20140362685A1

公开(公告)日：2014-12-11

申请号：US13952103

申请日：2013-07-26

Applicant: Electronics and Telecommunications Research Institute

Inventor： Chang-Joo KIM

IPC: H04L12/707 ,  H04W24/04

CPC classification number: H04L45/22 ,  H04W72/00 ,  H04W74/00

Abstract: A method for dynamically managing channels in a DSA radio system that supports multiple channels, includes producing a number of rendezvous combinations by pairing operating channels and backup channels in an 1:1 relation based on an available channel list. Further, the method includes when an arbitrary operating channel in a rendezvous combination is not suitable for communications, extracting a backup channel from the rendezvous combination to which the arbitrary operating channel belongs; and switching the extracted backup channel as an operating channel to continue a communication.

Abstract translation: 一种用于动态管理支持多个信道的DSA无线电系统中的信道的方法，包括基于可用信道列表，以1：1关系配对操作信道和备份信道来产生多个会合组合。 此外，该方法包括当会合组合中的任意操作信道不适于通信时，从任意操作信道所属的会合组合中提取备用信道; 并且将所提取的备用信道切换为操作信道以继续通信。

公开(公告)号：US20140314165A1

公开(公告)日：2014-10-23

申请号：US13965335

申请日：2013-08-13

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hyung Jung KIM ,  Chang-Joo KIM ,  Jin Young KIM ,  Seung-Ho CHOI

IPC: H04L27/26

CPC classification number: H04L27/2678 ,  H04L27/2666

Abstract: A method provides an identifying OFDM communication signal using OFDM symbol estimation. In view of the above, the present invention provides an apparatus and method for identifying an OFDM communication signal using an OFDM symbol estimation, which is capable of analyzing the OFDM signal with a high accuracy in a cognitive radio technique, thereby identifying the OFDM signal from a heterogeneous communication signal.

Abstract translation: 一种方法使用OFDM符号估计提供识别OFDM通信信号。 鉴于上述情况，本发明提供了一种使用OFDM符号估计来识别OFDM通信信号的装置和方法，其能够在认知无线电技术中以高精度分析OFDM信号，从而识别来自 异构通信信号。