NETWORK ENTRY AND DEVICE DISCOVERY FOR COGNITIVE RADIO NETWORKS
    2.
    发明申请
    NETWORK ENTRY AND DEVICE DISCOVERY FOR COGNITIVE RADIO NETWORKS 有权
    网络入侵和设备发现认知无线电网络

    公开(公告)号:US20100246434A1

    公开(公告)日:2010-09-30

    申请号:US12744409

    申请日:2008-11-24

    IPC分类号: H04L12/26 H04L12/28

    CPC分类号: H04W72/044 H04W48/16

    摘要: A device (400) scans and classifies each channel within a spectrum of channels (215-270) as being occupied or unoccupied (255), and, if occupied, whether it is occupied by a primary user (240), a secondary user (230), or an unknown user (260). As a secondary device (400), transmissions are avoided on channels occupied by primary users (490). The device selectively joins an existing network of secondary devices, or establishes a new network on an unoccupied channel (125), based on the quality of service (QoS) that the channel can provide and/or other factors. If the device is paired with a target device (115), the paired device advertises itself on a selected channel (345-360) for a period that is at least as long as the time required to scan all channels, to facilitate discovery in the event that the target device is also in a search mode. The advertising duration randomly alternates (345) among integer multiples of the scan duration.

    摘要翻译: 设备(400)扫描并分类频道(215-270)内的每个信道被占用或未被占用(255),并且如果被占用,是否被主用户(240)占用,次用户( 230)或未知用户(260)。 作为辅助设备(400),在主要用户(490)占用的信道上避免传输。 设备选择性地加入二次设备的现有网络,或者基于信道可以提供的服务质量(QoS)和/或其他因素在未占用信道(125)上建立新网络。 如果设备与目标设备(115)配对,则配对设备在所选频道(345-360)上通告自身的持续时间至少等于扫描所有频道所需的时间,以便于在 目标设备也处于搜索模式的事件。 广告持续时间的整数倍之间随机交替(345)。