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    • 21. 发明申请
    • Interference cancellation method and module for OFDMA mobile communication system
    • OFDMA移动通信系统的干扰消除方法和模块
    • US20070049199A1
    • 2007-03-01
    • US11510085
    • 2006-08-25
    • Kwang-Jae LimChul-Sik Yoon
    • Kwang-Jae LimChul-Sik Yoon
    • H04B1/00H04B15/00
    • H04L25/0206H04B7/0669H04B7/0848H04L5/0048H04L25/0224H04L25/0244H04L25/0256H04L25/0258H04L25/03331H04L27/2647H04L2025/03414H04L2025/03426
    • The present invention relates to an interference cancellation receiving method in an OFDMA mobile communication system, and an apparatus using the same. For this purpose, the present invention provides an interference cancellation receiving method for outputting a data symbol from which an interfering signal is canceled by receiving subcarriers including a data signal from a serving base station, the data signal including interfering signals from a neighboring base station and a remote base station, estimating a channel response of the serving base station and the neighboring base station by using at least one adjacent pilot subcarrier in the frequency axis or time axis, computing a weight value for canceling the interfering signals, and combining at least one data subcarrier having a repeated identical data symbol among received subcarriers with the weight value. According to the present invention, performance of receiving serving base station signals is improved, and a success rate of handoff is increased and handoff delay time is reduced by successful decoding of signals from a serving base station and a neighboring base station when handoff occurs.
    • 本发明涉及一种OFDMA移动通信系统中的干扰消除接收方法及其使用方法。 为此,本发明提供了一种干扰消除接收方法,用于通过接收包括来自服务基站的数据信号的子载波来输出干扰信号从其中消除的数据符号,所述数据信号包括来自相邻基站的干扰信号,以及 远程基站,通过使用频率轴或时间轴中的至少一个相邻的导频子载波来估计服务基站和相邻基站的信道响应,计算用于消除干扰信号的权重值,以及组合至少一个 数据副载波在具有权重值的接收副载波中具有重复的相同数据符号。 根据本发明,改善接收服务基站信号的性能,并且当切换发生时,通过成功解码来自服务基站和相邻基站的信号,提高切换成功率并减少切换延迟时间。
    • 23. 发明授权
    • Method and apparatus for transmitting feedback information
    • 用于发送反馈信息的方法和装置
    • US08274953B2
    • 2012-09-25
    • US12376567
    • 2007-07-31
    • Kwang-Jae LimChul-Sik YoonJee-Hwan Ahn
    • Kwang-Jae LimChul-Sik YoonJee-Hwan Ahn
    • H04B7/216
    • H04L27/2602H04J13/00H04J13/0003H04L1/0073H04L5/0053H04L5/006
    • Disclosed is an apparatus for transmitting feedback information to a base station. The feedback information transmitting apparatus receives channel allocation information, generates a plurality of payloads regarding feedback information, and multiplexes the plurality of payloads in terms of a plurality of classes so as to generate a plurality of multiplexed payloads. Subsequently, the plurality of multiplexed payloads are code multiplexed so as to generate a code division multiplexing symbol, and a channel code is applied to the code division multiplexing symbol. Then, the code division multiplexing signal applied with the channel code is transmitted to a base station through a wireless resource. Accordingly, a feedback channel that is adaptive to a channel condition is configured, such that a wireless resource for a feedback channel can be efficiently used.
    • 公开了一种用于向基站发送反馈信息的装置。 反馈信息发送装置接收信道分配信息,生成关于反馈信息的多个有效载荷,并且根据多个等级复用多个有效载荷,以产生多个复用的有效载荷。 随后,多路复用的有效载荷被多路复用以产生码分复用符号,并且信道码被应用于码分复用符号。 然后,将应用了信道码的码分多路复用信号通过无线资源发送给基站。 因此,配置适应于信道条件的反馈信道,使得可以有效地使用用于反馈信道的无线资源。
    • 24. 发明授权
    • Method for managing group traffic encryption key in wireless portable internet system
    • 用于在无线便携式互联网系统中管理组通信加密密钥的方法
    • US08160254B2
    • 2012-04-17
    • US11921894
    • 2006-06-09
    • Seok-Heon ChoChul-Sik Yoon
    • Seok-Heon ChoChul-Sik Yoon
    • H04L29/06
    • H04L9/0822H04L9/0833H04L9/0891H04L2209/80
    • The present invention relates to a method for managing a group traffic encryption key (GTEK) in a wireless portable Internet system. In the method, for higher security of a group traffic service such as a multicast service, a broadcast service, and a multicast-broadcast service (MBS), a base station periodically generates and distributes a GTEK to a subscriber station served with the group traffic service. A lifetime of a group key encryption key (GKEK) used for encrypting a GTEK is set greater than that of the GTEK. That is, the GKEK is updated once while the GTEK is updated several times. According to the present invention, security for the group traffic service is increased while reducing radio resource consumption.
    • 本发明涉及一种用于在无线便携式因特网系统中管理组业务加密密钥(GTEK)的方法。 在该方法中,为了组播业务,广播业务,组播广播业务(MBS)等群组业务业务的更高的安全性,基站周期性地生成GTEK并将GTEK分配给与该组业务 服务。 用于加密GTEK的组密钥加密密钥(GKEK)的生命周期设置为大于GTEK的生命周期。 也就是说,GTEK更新一次,而GTEK被更新几次。 根据本发明,在减少无线电资源消耗的同时增加了组通信业务的安全性。
    • 27. 发明授权
    • Interference cancellation method and module for OFDMA mobile communication system
    • OFDMA移动通信系统的干扰消除方法和模块
    • US07680458B2
    • 2010-03-16
    • US11510085
    • 2006-08-25
    • Kwang-Jae LimChul-Sik Yoon
    • Kwang-Jae LimChul-Sik Yoon
    • H04B1/00H04B15/00
    • H04L25/0206H04B7/0669H04B7/0848H04L5/0048H04L25/0224H04L25/0244H04L25/0256H04L25/0258H04L25/03331H04L27/2647H04L2025/03414H04L2025/03426
    • The present invention relates to an interference cancellation receiving method in an OFDMA mobile communication system, and an apparatus using the same. For this purpose, the present invention provides an interference cancellation receiving method for outputting a data symbol from which an interfering signal is canceled by receiving subcarriers including a data signal from a serving base station, the data signal including interfering signals from a neighboring base station and a remote base station, estimating a channel response of the serving base station and the neighboring base station by using at least one adjacent pilot subcarrier in the frequency axis or time axis, computing a weight value for canceling the interfering signals, and combining at least one data subcarrier having a repeated identical data symbol among received subcarriers with the weight value. According to the present invention, performance of receiving serving base station signals is improved, and a success rate of handoff is increased and handoff delay time is reduced by successful decoding of signals from a serving base station and a neighboring base station when handoff occurs.
    • 本发明涉及一种OFDMA移动通信系统中的干扰消除接收方法及其使用方法。 为此,本发明提供了一种干扰消除接收方法,用于通过接收包括来自服务基站的数据信号的子载波来输出干扰信号从其中消除的数据符号,所述数据信号包括来自相邻基站的干扰信号,以及 远程基站,通过使用频率轴或时间轴中的至少一个相邻的导频子载波来估计服务基站和相邻基站的信道响应,计算用于消除干扰信号的权重值,以及组合至少一个 数据副载波在具有权重值的接收副载波中具有重复的相同数据符号。 根据本发明,改善接收服务基站信号的性能,并且当切换发生时,通过成功解码来自服务基站和相邻基站的信号,提高切换成功率并减少切换延迟时间。
    • 28. 发明申请
    • METHOD OF PERFORMING HANDOVER IN WIRELESS COMMUNICATION SYSTEM
    • 在无线通信系统中执行切换的方法
    • US20090196254A1
    • 2009-08-06
    • US12304733
    • 2007-06-28
    • Jae-Sun ChaChul-Sik Yoon
    • Jae-Sun ChaChul-Sik Yoon
    • H04W36/30H04W36/00
    • H04W36/30
    • The present invention relates to a handover method of a mobile station in a wireless communication system, and a base station and a mobile station for the same. A list of neighboring base stations that can accept a handover of a mobile station is shared by the mobile station and a serving base station before the mobile station performs the handover so as to reduce handover delay time in a high speed environment through addition, the active base station set managed by the mobile station and the serving base station can be managed with consideration of radio signal quality and resource state of each of the neighboring base stations included in the active base station set, and thus when the mobile station attempts a network re-entry process to a target base station that is not ready for the handover of the mobile station due to a loss of a handover control message, a handover failure due to a lack of radio resources can be prevented, thereby increasing a handover success rate.
    • 本发明涉及移动台在无线通信系统中的切换方法,以及用于其的基站和移动台。 能够接受移动台的切换的相邻基站的列表在移动台进行切换之前被移动台和服务基站共享,以便通过添加来减少高速环境中的切换延迟时间,活动 考虑到包括在有源基站组中的每个相邻基站的无线电信号质量和资源状态,可以管理由移动台和服务基站管理的基站集合,并且因此当移动台尝试网络re 由于缺少切换控制消息,未准备好进行移动台切换的目标基站的进入处理可以防止由于缺乏无线资源而导致的切换失败,从而提高切换成功率。
    • 29. 发明申请
    • Method for Requesting and Reporting Channel Quality Information in Wireless System and Apparatus Thereof
    • 无线系统及其设备中请求和报告信道质量信息的方法
    • US20080287138A1
    • 2008-11-20
    • US10588480
    • 2005-02-02
    • Chul-Sik YoonJae-Heung KimKun-Min YeoSoon-Yong LimByung-Han Ryu
    • Chul-Sik YoonJae-Heung KimKun-Min YeoSoon-Yong LimByung-Han Ryu
    • H04Q7/20
    • H04W72/085H04W72/0406
    • The subscriber station of claim 15, wherein the uplink data includes data to be transmitted, and a header having information on the data and the subscriber, and the uplink data generator adds the subheader includDisclosed is a method and device for requesting and reporting channel quality information in a mobile communication system. An uplink radio resource for a subscriber station having data to transmit is allocated and a CQI indicator for requesting channel quality information is added to the allocation information to be transmitted to a subscriber station. The subscriber station having received the uplink radio resource allocation information generates channel quality information by measuring the radio channel quality for communication with the base station according to existence of the indicator and transmits desired uplink data having the generated channel quality information to the base station. As a result, the seamless and efficient channel quality report can be performed in the wireless communication system, and the optical modulation and the channel coding level can be adapted for the subscriber to transmit or receive the data corresponding to the channel quality. ing the channel quality information to the header of the uplink data.
    • 16.根据权利要求15所述的用户站,其中,所述上行链路数据包括要发送的数据,以及具有关于所述数据和所述用户的信息的报头,并且所述上行链路数据生成器添加所述子报头。包括已知是用于请求和报告信道质量信息的方法和装置 在移动通信系统中。 分配用于具有要发送的数据的用户站的上行链路无线电资源,并将用于请求信道质量信息的CQI指示符添加到要发送到订户站的分配信息。 已经接收到上行链路无线电资源分配信息的订户站通过根据指示符的存在测量用于与基站的通信的无线电信道质量来生成信道质量信息,并将具有生成的信道质量信息的期望上行链路数据发送到基站。 结果,可以在无线通信系统中执行无缝和有效的信道质量报告,并且光调制和信道编码级别可以适用于用户发送或接收对应于信道质量的数据。 将信道质量信息提供给上行链路数据的报头。