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    BEACON RE-BROADCASTING APPARATUS, BEACON RE-BROADCASTING METHOD, AND INITIAL ACCESS REQUEST METHOD IN WIRELESS NETWORK
    4.
    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：WO2009072761A2

    公开(公告)日：2009-06-11

    申请号：PCT/KR2008006805

    申请日：2008-11-19

    Applicant: KOREA ELECTRONICS TELECOMM ,  KO GWANGZEEN ,  SONG MYUNG-SUN ,  HWANG SUNG-HYUN ,  UM JUNG-SUN ,  KIM CHANG-JOO ,  YOU SUNG-JIN

    Inventor： KO GWANGZEEN ,  SONG MYUNG-SUN ,  HWANG SUNG-HYUN ,  UM JUNG-SUN ,  KIM CHANG-JOO ,  YOU SUNG-JIN

    IPC: H04L12/28

    CPC classification number: H04W16/14 ,  H04W48/12 ,  H04W72/02 ,  H04W74/004 ,  H04W84/18

    Abstract: 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.

    Abstract translation: 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，除了对应的网络之外，也可以将信标信息接收到相邻网络。 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。

    CHANNEL SWITCHING APPARATUS AND METHOD OF A BASE STATION AND CHANNEL SWITCHING APPARATUS AND METHOD OF A TERMINAL BASED ON THE COGNITIVE RADIO SYSTEM
    7.
    发明专利
    CHANNEL SWITCHING APPARATUS AND METHOD OF A BASE STATION AND CHANNEL SWITCHING APPARATUS AND METHOD OF A TERMINAL BASED ON THE COGNITIVE RADIO SYSTEM 未知

    公开(公告)号：CA2708838C

    公开(公告)日：2016-02-02

    申请号：CA2708838

    申请日：2008-12-05

    Applicant: KOREA ELECTRONICS TELECOMM

    Inventor： KO GWANGZEEN ,  YOU SUNG-JIN ,  SONG MYUNG-SUN ,  HWANG SUNG-HYUN ,  UM JUNG-SUN ,  KIM CHANG-JOO

    IPC: H04B7/155

    Abstract: 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.

    CHANNEL SWITCHING APPARATUS AND METHOD OF A BASE STATION AND CHANNEL SWITCHING APPARATUS AND METHOD OF A TERMINAL BASED ON THE COGNITIVE RADIO SYSTEM
    10.
    发明专利
    CHANNEL SWITCHING APPARATUS AND METHOD OF A BASE STATION AND CHANNEL SWITCHING APPARATUS AND METHOD OF A TERMINAL BASED ON THE COGNITIVE RADIO SYSTEM 未知

    公开(公告)号：CA2708838A1

    公开(公告)日：2009-06-25

    申请号：CA2708838

    申请日：2008-12-05

    Applicant: KOREA ELECTRONICS TELECOMM

    Inventor： KO GWANGZEEN ,  YOU SUNG-JIN ,  SONG MYUNG-SUN ,  HWANG SUNG-HYUN ,  UM JUNG-SUN ,  KIM CHANG-JOO

    IPC: H04B7/155

    Abstract: 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.

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