公开(公告)号：US08977265B2

公开(公告)日：2015-03-10

申请号：US11003130

申请日：2004-12-03

申请人： In-Sun Lee ,  Kyuno-Hun Jang ,  Min-Ho Shin ,  William Albert Arbaugh ,  Arunesh Mishra

发明人： In-Sun Lee ,  Kyuno-Hun Jang ,  Min-Ho Shin ,  William Albert Arbaugh ,  Arunesh Mishra

IPC分类号： H04W36/00 ,  H04W84/12 ,  H04W84/18 ,  H04W40/00 ,  H04W92/20

CPC分类号： H04W36/0055 ,  H04W12/06 ,  H04W36/0016 ,  H04W36/0033 ,  H04W36/0038 ,  H04W36/08 ,  H04W40/00 ,  H04W48/16 ,  H04W48/20 ,  H04W84/045 ,  H04W84/12 ,  H04W84/18 ,  H04W88/08 ,  H04W92/20

摘要： A method for minimizing handoff latencies when a handoff is performed in a wireless network. An access point (AP) or base station associated to a current wireless station (STA) allows information required for a reassociation to the STA to be propagated to handoff-capable neighboring APs or base stations. When the STA moves, a neighboring AP or base station performs the reassociation to the STA on the basis of context. When a handoff procedure is performed, the time taken to receive context of a corresponding STA is reduced, such that a fast handoff can be implemented.

摘要翻译： 一种在无线网络中执行切换时最小化切换延迟的方法。 与当前无线站（STA）相关联的接入点（AP）或基站允许将STA重新关联所需的信息传播到具有切换能力的相邻AP或基站。 当STA移动时，相邻AP或基站根据上下文对STA执行重新关联。 当执行切换过程时，减少用于接收相应STA的上下文所花费的时间，使得可以实现快速切换。

公开(公告)号：US08554210B2

公开(公告)日：2013-10-08

申请号：US11869194

申请日：2007-10-09

申请人： Hyun Ho Choi ,  In Sun Lee ,  Hyo Sun Hwang ,  Yoon Chae Cheong ,  Tae In Hyon ,  Kyung Hun Jang ,  Young Soo Kim

发明人： Hyun Ho Choi ,  In Sun Lee ,  Hyo Sun Hwang ,  Yoon Chae Cheong ,  Tae In Hyon ,  Kyung Hun Jang ,  Young Soo Kim

IPC分类号： H04W4/00

CPC分类号： H01L29/86 ,  H01L23/5228 ,  H01L2924/0002 ,  H04W36/08 ,  H04W88/08 ,  H04W88/18 ,  H01L2924/00

摘要： An apparatus for storing handover information in a mobile communication system is provided. The apparatus includes an estimation unit configured to estimate a direction of arrival (DOA) of a received signal with respect to a first base station based on the received signal, the received signal being received from a terminal belonging to the first base station, and a storage unit to store the estimated DOA as handover information associated with a second base station when the terminal is handed over to the second base station.

摘要翻译： 提供一种用于在移动通信系统中存储切换信息的装置。 该装置包括：估计单元，被配置为基于接收到的信号估计接收信号相对于第一基站的接收信号的方向（DOA），接收信号是从属于第一基站的终端接收的，以及 存储单元，当终端被切换到第二基站时，将估计的DOA存储为与第二基站相关联的切换信息。

公开(公告)号：US08185055B2

公开(公告)日：2012-05-22

申请号：US12042521

申请日：2008-03-05

申请人： Hyun Ho Choi ,  Hyo Sun Hwang ,  Tae In Hyon ,  Kyung Hun Jang ,  In Sun Lee ,  Hyun Gi Ahn ,  Yong Ho Cho ,  Dong Jo Park ,  Jung Hyun Park

发明人： Hyun Ho Choi ,  Hyo Sun Hwang ,  Tae In Hyon ,  Kyung Hun Jang ,  In Sun Lee ,  Hyun Gi Ahn ,  Yong Ho Cho ,  Dong Jo Park ,  Jung Hyun Park

IPC分类号： H04B1/00 ,  H04B15/00 ,  H04B17/00

CPC分类号： H04W16/14 ,  H04L27/2607 ,  H04L27/2647

摘要： An interference determination apparatus, including a signal receiver to receive a first signal of a primary network and a second signal of a secondary network; a correlator to compute a correlation value of a first cyclic prefix included in the first signal and a correlation value of a second cyclic prefix included in the second signal; and an interference determination unit to determine an interference level or whether the interference occurs between the primary network and the secondary network, using the correlation value of the first cyclic prefix and the correlation value of the second cyclic prefix.

摘要翻译： 一种干扰确定装置，包括用于接收主网络的第一信号的信号接收器和辅助网络的第二信号; 相关器，用于计算包括在第一信号中的第一循环前缀的相关值和包括在第二信号中的第二循环前缀的相关值; 以及干扰确定单元，使用第一循环前缀的相关值和第二循环前缀的相关值来确定干扰电平或者是否在主网络和次网之间发生干扰。

公开(公告)号：US08086186B2

公开(公告)日：2011-12-27

申请号：US12168216

申请日：2008-07-07

申请人： Hyun Ho Choi ,  Tae In Hyon ,  Kyung Hun Jang ,  In Sun Lee ,  Youngsoo Kim

发明人： Hyun Ho Choi ,  Tae In Hyon ,  Kyung Hun Jang ,  In Sun Lee ,  Youngsoo Kim

IPC分类号： H04B17/00

CPC分类号： H04B1/0475 ,  H04B1/406 ,  H04W16/14 ,  H04W24/00 ,  H04W52/244 ,  H04W52/325 ,  H04W72/02

摘要： A cognitive radio communication apparatus and method which adaptably controls a sensing reference level based on a transmission power of a transmitter is provided. A cognitive radio communication apparatus includes a sensing reference level control unit to adaptably control a sensing reference level based on a transmission power of a secondary transmitter included in a secondary network, and a fast sensing unit to determine whether a signal received for a predetermined time period exists based on the controlled sensing reference level.

摘要翻译： 提供了一种基于发射机的发射功率自适应地控制感测参考电平的认知无线电通信装置和方法。 认知无线电通信装置包括：感测参考电平控制单元，用于基于辅助网络中包括的辅助发射机的发射功率来自适应地控制感测参考电平;以及快速感测单元，用于确定在预定时间段内接收到的信号 基于受控感应参考电平存在。

公开(公告)号：US07929948B2

公开(公告)日：2011-04-19

申请号：US12192699

申请日：2008-08-15

申请人： In-Sun Lee ,  Kyung-Hun Jang ,  Min-Ho Shin ,  William Albert Arbaugh ,  Arunesh Mishra

发明人： In-Sun Lee ,  Kyung-Hun Jang ,  Min-Ho Shin ,  William Albert Arbaugh ,  Arunesh Mishra

IPC分类号： H04M1/66 ,  H04W4/00

CPC分类号： H04W12/04 ,  H04L9/0836 ,  H04L9/0844 ,  H04L63/062 ,  H04L63/0823 ,  H04L2209/80 ,  H04L2463/061 ,  H04W12/06 ,  H04W84/12 ,  H04W88/08

摘要： A roaming service method for a fast and secure wireless network is provided. In an embodiment of the present invention, an AP, which an STA associates with, transmits proactive keys needed for roaming to neighbor APs of the AP. When the STA moves to one of the neighbor APs, a reassociation is carried out between the STA and the neighbor AP using the already provided proactive key. In another embodiment of the present invention, an authentication server transmits proactive keys needed for roaming to neighbor APs to which the STA is likely to move, so that when the STA moves to one of the neighbor APs, a reassociation is carried out between the STA and the neighbor AP using the already provided proactive key.

摘要翻译： 提供了一种用于快速和安全无线网络的漫游服务方法。 在本发明的一个实施例中，STA与其相关联的AP向AP的相邻AP发送漫游所需的主动密钥。 当STA移动到相邻AP之一时，使用已经提供的主动密钥在STA和邻居AP之间执行重新关联。 在本发明的另一个实施例中，认证服务器将漫游所需的主动密钥发送给STA可能移动到的邻居AP，使得当STA移动到相邻AP之一时，在STA之间执行重新关联 和邻居AP使用已提供的主动密钥。

公开(公告)号：US20090117914A1

公开(公告)日：2009-05-07

申请号：US12039901

申请日：2008-02-29

申请人： Tae Soo KWON ,  Hyun Gi AHN ,  Tae In HYON ,  Kyung Hun JANG ,  In Sun LEE ,  Youngsoo KIM ,  Hyo Sun HWANG ,  Hyun Ho CHOI

发明人： Tae Soo KWON ,  Hyun Gi AHN ,  Tae In HYON ,  Kyung Hun JANG ,  In Sun LEE ,  Youngsoo KIM ,  Hyo Sun HWANG ,  Hyun Ho CHOI

IPC分类号： H04Q7/22

CPC分类号： H04W16/14

摘要： An operation method of a radio communication station is provided. The operation method of a radio communication station, the operation method including: transmitting a basic pilot signal to at least one terminal located in a coverage of a preoccupied system; and transmitting a cognitive radio (CR) pilot signal.

摘要翻译： 提供无线电通信站的操作方法。 一种无线电通信站的操作方法，所述操作方法包括：向位于所关注系统的覆盖范围内的至少一个终端发送基本导频信号; 以及发送认知无线电（CR）导频信号。

公开(公告)号：US20060276176A1

公开(公告)日：2006-12-07

申请号：US11433679

申请日：2006-05-12

申请人： In-Sun Lee ,  Sang-Boh Yun ,  William Arbaugh ,  T. Clancy ,  Min-Ho Shin

发明人： In-Sun Lee ,  Sang-Boh Yun ,  William Arbaugh ,  T. Clancy ,  Min-Ho Shin

IPC分类号： H04M1/66

CPC分类号： H04W12/06 ,  H04L63/0464 ,  H04L63/0892 ,  H04L63/162 ,  H04W12/04 ,  H04W84/047

摘要： The present invention relates to an authentication method for wireless distribution system including at least one base station providing access service to mobile stations in a coverage of the base station. In the authentication method, an unregistered base station receives an authentication request from a mobile station, multicast an identity request for identifying the mobile station over the wireless distribution system, receives identity responses from at least one base station in response to the identity request, and performs authentication of the mobile station on the basis of the identity responses. The distributed authentication method of the present invention is performed without AAA server, when a new base station is installed or isolated base stations are joined, such that it is possible to extend the network in an easy manner without degradation of the security degree and additional labor burden of the operator.

摘要翻译： 本发明涉及一种无线分配系统的认证方法，包括至少一个基站向基站的覆盖范围内的移动台提供接入服务。 在认证方法中，未登记的基站从移动台接收认证请求，通过无线分发系统多播用于识别移动台的身份请求，响应于身份请求从至少一个基站接收身份响应，以及 基于身份响应来执行移动台的认证。 本发明的分布式认证方法在没有AAA服务器的情况下进行，当安装新的基站或者隔离的基站被连接时，可以容易地扩展网络而不降低安全程度和额外的劳动 操作员的负担。

公开(公告)号：US08761780B2

公开(公告)日：2014-06-24

申请号：US11959532

申请日：2007-12-19

申请人： Hyun Ho Choi ,  Tae In Hyon ,  Hyo Sun Hwang ,  In Sun Lee ,  Young Soo Kim ,  Hyun Gi Ahn

发明人： Hyun Ho Choi ,  Tae In Hyon ,  Hyo Sun Hwang ,  In Sun Lee ,  Young Soo Kim ,  Hyun Gi Ahn

IPC分类号： H04W40/00

CPC分类号： H04L1/0004 ,  H04W16/14 ,  H04W74/08 ,  H04W88/10

摘要： An access point (AP) and a mobile station in a wireless communication system and a method of controlling the same are provided. A method of controlling an AP in a wireless communication system includes: determining whether a transmission of a control message is needed; transmitting the control message via a first frequency band when the transmission of the control message is needed; determining whether a transmission of a data message is needed; and transmitting the data message via a second frequency band when the transmission of the data message is needed.

摘要翻译： 提供了无线通信系统中的接入点（AP）和移动台及其控制方法。 一种在无线通信系统中控制AP的方法包括：确定是否需要发送控制消息; 当需要发送控制消息时经由第一频带发送控制消息; 确定是否需要传输数据消息; 并且当需要传输数据消息时经由第二频带发送数据消息。

公开(公告)号：US08654822B2

公开(公告)日：2014-02-18

申请号：US12034959

申请日：2008-02-21

申请人： Young Soo Kim ,  Kyung Hun Jang ,  In Sun Lee ,  Jung Woo Lee ,  Hyo Sun Hwang ,  Hyun Gi Ahn ,  Chan Hong Kim

发明人： Young Soo Kim ,  Kyung Hun Jang ,  In Sun Lee ,  Jung Woo Lee ,  Hyo Sun Hwang ,  Hyun Gi Ahn ,  Chan Hong Kim

IPC分类号： H04B1/38 ,  H04L5/16

CPC分类号： H04B7/01

摘要： A link adaptation system using a Doppler frequency is provided. The link adaptation system includes: a Doppler frequency estimation unit to estimate a Doppler frequency of a signal transmitted via a wireless channel; a Signal to Noise Ratio (SNR) measurement interval determination unit to determine an SNR measurement interval of the signal transmitted via the wireless channel based on the estimated Doppler frequency; and an SNR measurement unit to measure an SNR of the signal based on the determined SNR measurement interval.

摘要翻译： 提供了使用多普勒频率的链路自适应系统。 链路适配系统包括：多普勒频率估计单元，用于估计经由无线信道发送的信号的多普勒频率; 信噪比测量间隔确定单元，用于基于估计的多普勒频率确定经由无线信道发送的信号的SNR测量间隔; 以及SNR测量单元，用于基于所确定的SNR测量间隔来测量信号的SNR。

公开(公告)号：US20110164621A1

公开(公告)日：2011-07-07

申请号：US12984714

申请日：2011-01-05

申请人： In Sun LEE ,  Chan Soo Hwang

发明人： In Sun LEE ,  Chan Soo Hwang

IPC分类号： H04L12/56

CPC分类号： H04B7/15521 ,  H04L1/0076 ,  H04L1/1635 ,  H04L1/18 ,  H04L2001/0097 ,  H04W40/24 ,  H04W84/18

摘要： Provided is a communication method of a relay node for network coding, including determining one of a plurality of nodes included in a mesh network as a relay node to perform network coding; determining, by the relay node among the plurality of nodes, nodes capable of participating in the network coding; and performing the network coding with respect to the nodes capable of participating in the network coding.

摘要翻译： 提供了一种用于网络编码的中继节点的通信方法，包括：将包括在网状网络中的多个节点中的一个确定为中继节点，以执行网络编码; 由所述多个节点中的中继节点确定能够参与所述网络编码的节点; 以及对能够参与网络编码的节点执行网络编码。