FAST HANDOFF FOR WIRELESS DEVICES IN A WIRED-WIRELESS NETWORK
    41.
    发明公开
    FAST HANDOFF FOR WIRELESS DEVICES IN A WIRED-WIRELESS NETWORK 有权
    FAST下一个范围来自无线设备的无线网络中的线

    公开(公告)号:EP2060133A2

    公开(公告)日:2009-05-20

    申请号:EP07869264.7

    申请日:2007-12-14

    CPC classification number: H04W36/0016 H04W36/02 H04W40/32 H04W40/36

    Abstract: A method and apparatus for handoff of a wireless client from a first network device to a second network device in a wired network are disclosed. In one embodiment, the method includes receiving data from a new wireless client at the second network device and transmitting a request for a route update for the new wireless client to the wired network. Prior to network convergence for the route update, data traffic for the new wireless client is received from the first network device and forwarded to the new wireless client. Context information for the new wireless client is transmitted from the second network device to other network devices in a proximity group of the second network device.

    SECURITY MEASURES FOR THE SMART GRID
    49.
    发明公开
    SECURITY MEASURES FOR THE SMART GRID 审中-公开
    安全措施智能电网

    公开(公告)号:EP2721801A2

    公开(公告)日:2014-04-23

    申请号:EP12730113.3

    申请日:2012-06-15

    CPC classification number: H04L63/0236 H04L63/1441 H04L63/1491 Y04S40/24

    Abstract: Security is enabled in an electrical system by examining a configuration file for a substation present in the electrical system, where the substation includes one or more electrical devices and one or more network devices. Based on the examination of the configuration file, information is determined on a characteristic of an electrical device that is selected from a group including a type, allowed role of the electrical device and allowed communication modes for the electrical device. Based on the determined information, a basis for controlling the role and communication modes for the electrical device is identified. A security policy is configured in a network device in the substation to incorporate the identified basis. Based on the configured security policy in the network device, communication patterns for the electrical device are allowed that are associated with the allowed role and allowed communication modes for the electrical device.

    HIERARCHICAL CONTROL SIGNALING FOR MOBILE CLIENTS IN DISTRIBUTED WIRELESS CONTROLLER SYSTEM
    50.
    发明公开
    HIERARCHICAL CONTROL SIGNALING FOR MOBILE CLIENTS IN DISTRIBUTED WIRELESS CONTROLLER SYSTEM 有权
    分级控制信号,移动客户端的分布式无线控制系统

    公开(公告)号:EP2567557A1

    公开(公告)日:2013-03-13

    申请号:EP11719427.4

    申请日:2011-05-03

    CPC classification number: H04W8/085 H04W8/26

    Abstract: A system and method are provided for a hierarchical distributed control architecture to support roaming of wireless client devices. A plurality of access switches are provided and configured to serve one or more Internet Protocol (IP) subnets that comprises a plurality of IP addresses. The plurality of access switches are arranged in switch peer groups such that each access switch within a given switch peer group is configured to store information about other access switches in that switch peer group and about locations of wireless client devices that are associated with any wireless access point on any access switch in the switch peer group. The plurality of access switches are further grouped into a corresponding one of a plurality of mobility sub-domains each comprising a plurality of switch peer groups. A plurality of controller devices are provided, each configured to control access switches in a corresponding mobility sub-domain. Each controller device stores information about the plurality of access switches within its mobility sub-domain and about locations of wireless client devices at access switches in its mobility sub-domain. A central controller device is provided and configured to communicate with the plurality of controller devices for the respective mobility sub-domains. The central controller device is configured to store information about locations of wireless client devices in the mobility sub-domains.

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