Data packet transmission
    2.
    发明授权
    Data packet transmission 失效
    数据包传输

    公开(公告)号:US06442161B1

    公开(公告)日:2002-08-27

    申请号:US09122821

    申请日:1998-07-27

    IPC分类号: H04L1256

    CPC分类号: H04L12/4645 H04L1/004

    摘要: A network in which a data packet is altered, for instance by the insertion or removal of a data portion such as a VLAN tag. The data of the data packet is read out of memory to an output means which forms the altered data packet with a new FCS portion and to a checking means which checks the integrity of the input packet using the existing FCS. The possibility for discrepancies to occur between the data supplied to the output and checking means is reduced.

    摘要翻译: 例如通过插入或移除诸如VLAN标签的数据部分来改变数据分组的网络。 将数据分组的数据从存储器读出到具有新的FCS部分形成改变的数据分组的输出装置以及使用现有的FCS来检查输入分组的完整性的检查装置。 在提供给输出的数据和检查装置的数据之间出现差异的可能性降低。

    High resolution localization for indoor environments
    3.
    发明申请
    High resolution localization for indoor environments 审中-公开
    室内环境的高分辨率定位

    公开(公告)号:US20060217132A1

    公开(公告)日:2006-09-28

    申请号:US11087412

    申请日:2005-03-23

    IPC分类号: H04Q7/20

    CPC分类号: H04W64/00

    摘要: The present invention relates to locating a person who is operating a wireless communications device in an indoor environment. In particular, it relates to processing various combinations of RSSI, direction of arrival and flight time characteristics of a signal, as received at two or more and preferably three or more access points. In one embodiment, the access points implement a wireless LAN (WLAN) and the communications device is a telephone operating over the WLAN. In another embodiment, the localization of a wireless device allows a system to reject users who are outside a predefined physical area.

    摘要翻译: 本发明涉及在室内环境中定位正在操作无线通信设备的人员。 具体地说,涉及处理RSSI,到达方向以及信号的飞行时间特征的各种组合,如在两个或更多,优选三个或更多个接入点处接收到的。 在一个实施例中,接入点实现无线LAN(WLAN),并且通信设备是在WLAN上运行的电话。 在另一个实施例中,无线设备的定位允许系统拒绝在预定义的物理区域之外的用户。