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    Channel switching apparatus and method of a base station and channel switching apparatus and method of a terminal based on the cognitive radio system
    4.
    发明授权
    Channel switching apparatus and method of a base station and channel switching apparatus and method of a terminal based on the cognitive radio system 有权
    基于认知无线电系统的基站的信道切换装置和方法以及终端的信道切换装置和方法

    公开(公告)号：US08619699B2

    公开(公告)日：2013-12-31

    申请号：US12808507

    申请日：2008-12-05

    申请人： Gwangzeen Ko ,  Sung-Jin You ,  Myung-Sun Song ,  Sung-Hyun Hwang ,  Jung-Sun Um ,  Chang-Joo Kim

    发明人： Gwangzeen Ko ,  Sung-Jin You ,  Myung-Sun Song ,  Sung-Hyun Hwang ,  Jung-Sun Um ,  Chang-Joo Kim

    IPC分类号： H04W4/00

    CPC分类号： H04W48/12 ,  H04W16/14 ,  H04W36/06 ,  H04W72/042 ,  H04W72/0446

    摘要： A channel switching method is provided for a base station to allocate a slot for data exchange with each of a plurality of terminals in a frequency channel that is not used by an incumbent user (IU). The method includes 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.

    摘要翻译： 提供了一种信道切换方法，用于基站分配用于在现有用户（IU）未使用的频率信道中的多个终端中的每个终端进行数据交换的时隙。 该方法包括在频率信道中感测到IU的信号时发送用于请求切换到备用信道的信道切换消息; 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。

    CHANNEL SWITCHING APPARATUS AND METHOD OF A BASE STATION AND CHANNEL SWITCHING APPARATUS AND METHOD OF A TERMINAL BASED ON THE COGNITIVE RADIO SYSTEM
    6.
    发明申请
    CHANNEL SWITCHING APPARATUS AND METHOD OF A BASE STATION AND CHANNEL SWITCHING APPARATUS AND METHOD OF A TERMINAL BASED ON THE COGNITIVE RADIO SYSTEM 有权

    公开(公告)号：US20100290416A1

    公开(公告)日：2010-11-18

    申请号：US12808507

    申请日：2008-12-05

    申请人： Gwangzeen Ko ,  Sung-Jin You ,  Myung-Sun Song ,  Sung-Hyun Hwang ,  Jung-Sun Um ,  Chang-Joo Kim

    发明人： Gwangzeen Ko ,  Sung-Jin You ,  Myung-Sun Song ,  Sung-Hyun Hwang ,  Jung-Sun Um ,  Chang-Joo Kim

    IPC分类号： H04W72/04

    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.

    BEACON RE-BROADCASTING APPARATUS, BEACON RE-BROADCASTING METHOD, AND INITIAL ACCESS REQUEST METHOD IN WIRELESS NETWORK
    7.
    发明申请
    BEACON RE-BROADCASTING APPARATUS, BEACON RE-BROADCASTING METHOD, AND INITIAL ACCESS REQUEST METHOD IN WIRELESS NETWORK 审中-公开
    BEACON RE-BROADCASTING APPARATUS，BEACON RE-BROADCASTING METHOD，AND INITIAL ACCESS REQUEST METHOD IN WIRELESS NETWORK

    公开(公告)号：US20100265871A1

    公开(公告)日：2010-10-21

    申请号：US12746718

    申请日：2008-11-19

    申请人： Gwangzeen Ko ,  Myung-Sun Song ,  Sung-Hyun Hwang ,  Jung-Sun Um ,  Chang-Joo Kim ,  Sung-Jin You

    发明人： Gwangzeen Ko ,  Myung-Sun Song ,  Sung-Hyun Hwang ,  Jung-Sun Um ,  Chang-Joo Kim ,  Sung-Jin You

    IPC分类号： H04W72/04 ,  H04B7/14

    CPC分类号： H04W16/14 ,  H04W48/12 ,  H04W72/02 ,  H04W74/004 ,  H04W84/18

    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.

    摘要翻译： 提供了一种无线网络中的信标再广播设备，信标再广播方法和初始接入请求方法。 在重新广播装置和方法中，从用于管理无线网络的管理装置接收包括用于无线网络中的通信的信标信息的信标帧和分配给超帧时隙之间的信标重新广播的回波信标时隙的信息 网络，其中多个终端通过包括时分时隙的超帧彼此通信，并且在回波信标时隙期间重新广播信标信息。 因此，可以在各种环境中接收信标信息，除了相应的网络之外，还可以向相邻网络接收信标信息。 因此，频率资源可以在网络之间共享和有效地使用，网络运营的方便性和效率可以最大化。

    METHOD AND DEVICE FOR COMMUNICATION BETWEEN DEVICES WITH DIFFERENT TRANSMISSION COVERAGE
    8.
    发明申请
    METHOD AND DEVICE FOR COMMUNICATION BETWEEN DEVICES WITH DIFFERENT TRANSMISSION COVERAGE 失效
    用于与具有不同传输覆盖的设备之间通信的方法和设备

    公开(公告)号：US20110149889A1

    公开(公告)日：2011-06-23

    申请号：US12942491

    申请日：2010-11-09

    申请人： Jung Sun UM ,  Gwangzeen Ko ,  Sung-Hyun Hwang ,  Myung Sun Song ,  Chang-Joo Kim

    发明人： Jung Sun UM ,  Gwangzeen Ko ,  Sung-Hyun Hwang ,  Myung Sun Song ,  Chang-Joo Kim

    IPC分类号： H04W72/04

    CPC分类号： H04W72/1205 ,  H04W84/045 ,  H04W84/047

    摘要： Provided is a large range management device (LRMD) of managing a communication between a plurality of small range devices (SRDs) and a plurality of large range devices (LRDs), the SRDs and the LRDs being located in a single cell and having different transmission coverage, the LRMD including an access slot allocation unit to allocate an SRD access slot to a radio resource for a downlink, to enable a first SRD to request an association from a network, a selection unit to select a communication relay device for relaying relay data of the first SRD, a relay slot allocation unit to allocate at least one SRD relay slot to a radio resource for an uplink, to enable the communication relay device to relay the relay data to a second SRD or another LRD, and a receiving unit to receive the relay data based on the at least one SRD relay slot

    摘要翻译： 提供了一种管理多个小范围设备（SRD）和多个大范围设备（LRD）之间的通信的大范围管理设备（LRMD），SRD和LRD位于单个小区中并具有不同的传输 覆盖，所述LRMD包括接入时隙分配单元，用于向下行链路的无线电资源分配SRD接入时隙，以使得第一SRD能够从网络请求关联，所述选择单元选择用于中继中继数据的通信中继设备 的第一SRD的中继时隙分配单元，用于向上行链路的无线资源分配至少一个SRD中继时隙，以使得所述通信中继设备能够将所述中继数据中继到第二SRD或另一个LRD;以及接收单元， 基于所述至少一个SRD中继槽接收所述中继数据

    Method and apparatus of hybrid burst mapping in OFDMA systems
    9.
    发明授权
    Method and apparatus of hybrid burst mapping in OFDMA systems 有权
    OFDMA系统中混合突发映射的方法和装置

    公开(公告)号：US08693410B2

    公开(公告)日：2014-04-08

    申请号：US12665861

    申请日：2008-06-11

    申请人： Sung-Hyun Hwang ,  Jung-Sun Um ,  Myung-Sun Song ,  Chang-Joo Kim ,  Gwangzeen Ko

    发明人： Sung-Hyun Hwang ,  Jung-Sun Um ,  Myung-Sun Song ,  Chang-Joo Kim ,  Gwangzeen Ko

    IPC分类号： H04W4/00 ,  H04J3/00 ,  H04B7/216

    CPC分类号： H04L5/0007 ,  H04L5/006 ,  H04L5/0064 ,  H04L5/0092 ,  H04L25/0224

    摘要： Provided are a method of adaptively allocating appropriate hybrid bursts according to terminal attributes including terminal position, channel state, and service type in an orthogonal frequency-division multiple access (OFDMA) system, and an upstream-MAP information element (US-MAP IE) structure supporting the method. The method includes dividing an upstream subframe into a plurality of zones depending on the number of OFDMA symbols and allocating bursts of a zone to a terminal according to the terminal attributes. Bursts are formed by allocating slots along a time axis in the upstream subframe, and are formed by allocating slots along a frequency axis in a downstream subframe.

    摘要翻译： 提供了一种根据包括正交频分多址（OFDMA）系统中的终端位置，信道状态和业务类型的终端属性以及上游MAP信息元素（US-MAP IE）自适应地分配适当混合突发的方法， 结构支撑的方法。 该方法包括根据OFDMA符号的数目将上游子帧划分成多个区域，并根据终端属性向终端分配突发。 通过在上游子帧中沿着时间轴分配时隙来形成突发，并且通过在下游子帧中沿着频率轴分配时隙来形成突发。