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    • 2. 发明申请
    • BEHAVIOR-BASED TRAFFIC DIFFERENTIATION (BTD) TO DEFEND AGAINST DISTRIBUTED DENIAL OF SERVICE(DDoS) ATTACKS
    • 基于行为的交通差异(BTD)防止分布式服务(DDoS)攻击
    • WO2007103864A2
    • 2007-09-13
    • PCT/US2007063296
    • 2007-03-05
    • NEW JERSEY TECH INSTGAO ZHIQIANGANSARI NIRWAN
    • GAO ZHIQIANGANSARI NIRWAN
    • G06F15/16
    • H04L45/00H04L63/1408H04L63/1458H04L2463/141
    • Embodiments are directed toward a method for Behavior-based Traffic Differentiation (BTD) that initially receives incoming packets and performs traffic classification to determine the protocol of the incoming packets. In addition, BTD performs bandwidth division/allocation to further support traffic classification amongst non-TCP traffic types such as UDP and ICMP. For TCP traffic, the method for BTD determines whether a TCP connection has been established and performs at least one of rate limiting, waiting time reduction for half-open connections, and incrementing backlog queue size, when the TCP connection has not been established. If the TCP connection has been established successfully, the method for BTD further includes proactive tests for traffic differentiation which identify normal traffic, which is admitted, and attack traffic, which is dropped.
    • 实施例针对基于行为的流量分化(BTD)的方法,该方法最初接收传入分组并进行流分类以确定输入分组的协议。 此外,BTD执行带宽划分/分配,以进一步支持非TCP流量类型(如UDP和ICMP)中的流量分类。 对于TCP流量,当TCP连接尚未建立时,BTD的方法确定TCP连接是否已建立,并且执行速率限制,半开连接的等待时间减少以及递增积压队列大小中的至少一个。 如果TCP连接建立成功,BTD的方法还包括进行流量分类的主动测试,识别被允许的正常流量和丢弃的攻击流量。
    • 5. 发明申请
    • CONTROLLERS, OBSERVERS, AND APPLICATIONS THEREOF
    • 控制器,观察者及其应用
    • WO2007035559A2
    • 2007-03-29
    • PCT/US2006036156
    • 2006-09-18
    • UNIV STATE CLEVELANDGAO ZHIQIANGMIKLOSOVIC ROBERTRADKE AARONZHOU WANKUNZHENG QING
    • GAO ZHIQIANGMIKLOSOVIC ROBERTRADKE AARONZHOU WANKUNZHENG QING
    • H04L7/02
    • G05B13/04F05B2260/80G05B2219/25298
    • [0398] Controller scaling and parameterization are. described. Techniques that can be improved by employing the scaling and parameterization include, but are not limited to, controller design, tuning and optimization. The scaling and parameterization methods described here apply to transfer function based controllers, including PID controllers. The parameterization methods also apply to state feedback and state observer based controllers, as well as linear active disturbance rejection (ADRC) controllers. Parameterization simplifies the use of ADRC. A discrete extended state observer (DESO) and a generalized extended state observer (GESO) are described. They improve the performance of the ESO and therefore ADRC. A tracking control algorithm is also described that improves the performance of the ADRC controller. A general algorithm is described for applying ADRC to multi-input multi-output systems. Several specific applications of the control systems and processes are disclosed.
    • 控制器缩放和参数化是。 描述。 可以通过使用缩放和参数化来改进的技术包括但不限于控制器设计,调整和优化。 这里描述的缩放和参数化方法适用于基于传递函数的控制器,包括PID控制器。 参数化方法也适用于状态反馈和基于状态观察器的控制器,以及线性有源扰动抑制(ADRC)控制器。 参数化简化了ADRC的使用。 描述了离散扩展状态观察器(DESO)和广义扩展状态观察器(GESO)。 它们提高了ESO的性能,从而提高了ADRC的性能。 还描述了改善ADRC控制器的性能的跟踪控制算法。 描述了将ADRC应用于多输入多输出系统的一般算法。 公开了控制系统和过程的几个具体应用。