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    • 6. 发明授权
    • Media access control (MAC) protocol for cognitive wireless networks
    • 用于认知无线网络的媒体访问控制(MAC)协议
    • US08879573B2
    • 2014-11-04
    • US11847034
    • 2007-08-29
    • Paramvir BahlRanveer ChandraThomas MoscibrodaGopala Sri Hari NarlankaYunnan WuYuan Yuan
    • Paramvir BahlRanveer ChandraThomas MoscibrodaGopala Sri Hari NarlankaYunnan WuYuan Yuan
    • H04L12/413H04W16/14H04L12/26
    • H04L12/2602H04L43/00H04L43/0882H04L43/16H04W16/14
    • A new media access control (MAC) protocol for cognitive wireless networks is described. The new MAC protocol allows each of multiple nodes, such as cell phones and computers with wireless, to determine utilization of a communication spectrum, such as the television broadcast band. The nodes collaborate to achieve a combined view of spectrum utilization in their local vicinity, in which scheduled users and empty time segments are mapped across a wide range of frequencies. Nodes negotiate with each other to reserve idle segments of the spectrum for packet exchange on negotiated frequencies. Control packet structure allows nodes to become prescient of the local spectrum utilization during handshaking. A cognitive device operating under the new MAC has a first radio that both scans the spectrum and monitors a control channel; and a second reconfigurable radio with adjustable parameters, including frequency and bandwidth, for packet transmission.
    • 描述了用于认知无线网络的新的媒体接入控制(MAC)协议。 新的MAC协议允许诸如蜂窝电话和具有无线的计算机的多个节点中的每一个确定诸如电视广播频带之类的通信频谱的利用。 节点协作实现其本地附近的频谱利用的组合视图,其中调度的用户和空时间段在广泛的频率范围内被映射。 节点相互协商以在协商的频率上保留用于分组交换的频谱的空闲段。 控制分组结构允许节点在握手期间变得预先考虑本地频谱利用。 在新MAC下操作的认知设备具有扫描频谱并监视控制信道的第一无线电; 以及用于分组传输的具有可调参数(包括频率和带宽)的第二可重新配置的无线电。
    • 8. 发明授权
    • Constructing an inference graph for a network
    • 为网络构建推理图
    • US08443074B2
    • 2013-05-14
    • US12039714
    • 2008-02-28
    • Paramvir BahlSrikanth KandulaRanveer ChandraDavid A. MaltzMing ZhangAlbert Greenberg
    • Paramvir BahlSrikanth KandulaRanveer ChandraDavid A. MaltzMing ZhangAlbert Greenberg
    • G06F15/16G06F17/00
    • H04L41/5058H04L41/12
    • Constructing an inference graph relates to the creation of a graph that reflects dependencies within a network. In an example embodiment, a method includes determining dependencies among components of a network and constructing an inference graph for the network responsive to the dependencies. The components of the network include services and hardware components, and the inference graph reflects cross-layer components including the services and the hardware components. In another example embodiment, a system includes a service dependency analyzer and an inference graph constructor. The service dependency analyzer is to determine dependencies among components of a network, the components including services and hardware components. The inference graph constructor is to construct an inference graph for the network responsive to the dependencies, the inference graph reflecting cross-layer components including the services and the hardware components.
    • 构造推理图与创建反映网络中依赖关系的图形有关。 在示例实施例中,一种方法包括确定网络的组件之间的依赖关系,并响应于依赖关系构建网络的推理图。 网络的组件包括服务和硬件组件,推理图反映了跨层组件,包括服务和硬件组件。 在另一示例实施例中,系统包括服务依赖性分析器和推理图构造器。 服务依赖性分析器是确定网络组件之间的依赖关系,包括服务和硬件组件在内的组件。 推理图构造函数是响应于依赖关系构建网络的推理图,反映包括服务和硬件组件在内的跨层组件的推理图。