Method for scheduling data transmission in hybrid communication networks for transportation safety systems
    1.
    发明授权
    Method for scheduling data transmission in hybrid communication networks for transportation safety systems 有权
    运输安全系统混合通信网络中数据传输调度方法

    公开(公告)号:US08565214B2

    公开(公告)日:2013-10-22

    申请号:US12979777

    申请日:2010-12-28

    IPC分类号: H04W4/00

    CPC分类号: H04W72/1242

    摘要: A hybrid communication network for a transportation safety system includes a fixed wired nodes and mobile wireless nodes. Because the wired nodes operate independently packets transmitted by the wired nodes to the wireless nodes need to be synchronized. A downlink travel time for downlink packets traveling from a controller to the wireless nodes is determined. Then, the controller schedules downlink data intervals (DDI) based on the downlink travel time; and transmits downlink packets to the wireless nodes during the DDI, such that a latency requirement of the transportation safety system is satisfied.

    摘要翻译: 用于运输安全系统的混合通信网络包括固定有线节点和移动无线节点。 由于有线节点独立运行,有线节点传输到无线节点的数据包需要同步。 确定从控制器到无线节点的下行链路分组的下行链路行进时间。 然后,控制器基于下行链路行进时间调度下行链路数据间隔(DDI); 并且在DDI期间向无线节点发送下行链路分组,使得满足运输安全系统的等待时间要求。

    Synchronous Data Transmission in Hybrid Communication Networks for Transportation Safety Systems
    2.
    发明申请
    Synchronous Data Transmission in Hybrid Communication Networks for Transportation Safety Systems 审中-公开
    用于运输安全系统的混合通信网络中的同步数据传输

    公开(公告)号:US20120147864A1

    公开(公告)日:2012-06-14

    申请号:US12964283

    申请日:2010-12-09

    IPC分类号: H04W84/02

    CPC分类号: B66B13/22 H04W84/047

    摘要: A hybrid communication network for a transportation safety system includes a wired network including a set of fixed nodes. Each fixed node includes a wired interface for connecting the fixed node to the wired network and at least one wireless interface. The set of fixed nodes further includes a head node at a first end of the wired network connected to a controller, a terminal node at a second end of the wired network, and a set of relay nodes arranged between the head node and the terminal node. A wireless network includes a set of mobile nodes and a set of fixed nodes connected to the wired network. Each mobile node includes at least one of the wireless interfaces, and each mobile node is arranged in a moveable car.

    摘要翻译: 用于运输安全系统的混合通信网络包括包括一组固定节点的有线网络。 每个固定节点包括用于将固定节点连接到有线网络和至少一个无线接口的有线接口。 所述固定节点集合还包括连接到控制器的有线网络的第一端的头节点,有线网络的第二端的终端节点以及布置在所述头节点和所述终端节点之间的一组中继节点 。 无线网络包括一组移动节点和连接到有线网络的一组固定节点。 每个移动节点包括无线接口中的至少一个,并且每个移动节点被布置在可移动的车中。

    Method and System for Determining Locations of Moving Objects with Maximum Length Sequences
    4.
    发明申请
    Method and System for Determining Locations of Moving Objects with Maximum Length Sequences 失效
    用于确定具有最大长度序列的移动对象的位置的方法和系统

    公开(公告)号:US20110077905A1

    公开(公告)日:2011-03-31

    申请号:US12571226

    申请日:2009-09-30

    IPC分类号: G01B7/00 G06F15/00

    CPC分类号: G01B7/003

    摘要: A location of an object is determined by arranging a sequence of bits on a substrate. The sequence of bits includes subsequence of bits, and each subsequence of bits is unique for each location along the substrate. When the object is at a particular location along the substrate a sensor detects the subsequence of bits at the particular location, and a decoder associates the location of the subsequence at the particular location with the object. The substrate can be a leaky coaxial cable with slits or not, corresponding to the bits, or lane markings on a road.

    摘要翻译: 通过在衬底上布置位序列来确定对象的位置。 比特序列包括比特的子序列,并且比特的每个子序列对于沿着基底的每个位置是唯一的。 当物体沿着衬底位于特定位置时,传感器检测特定位置处的位的子序列,并且解码器将特定位置处的子序列的位置与对象相关联。 衬底可以是具有狭缝的泄漏同轴电缆,对应于道路上的位或车道标记。

    Time slot and frequency allocation in wireless communication networks
    5.
    发明授权
    Time slot and frequency allocation in wireless communication networks 有权
    无线通信网络中的时隙和频率分配

    公开(公告)号:US08824414B2

    公开(公告)日:2014-09-02

    申请号:US13418494

    申请日:2012-03-13

    IPC分类号: H04W4/00

    CPC分类号: H04W28/16 H04B1/713 H04W84/18

    摘要: In a wireless network including a server and clients, network resources, such as time slots and channel frequencies, are managed by having the server define the resources for future use by the clients, while the clients actually allocate the resources for their exclusive use according to performance criteria determined by the clients. The network can be ad-hoc and in industrial environments with low-latency requirements.

    摘要翻译: 在包括服务器和客户端的无线网络中,通过使服务器定义用于客户端将来使用的资源来管理诸如时隙和信道频率之类的网络资源,而客户端实际分配用于其专用的资源 绩效标准由客户确定。 该网络可以是临时的,并且在低延迟要求的工业环境中。

    Wireless communication network for transportation safety systems
    6.
    发明授权
    Wireless communication network for transportation safety systems 失效
    运输安全系统无线通信网络

    公开(公告)号:US08418813B2

    公开(公告)日:2013-04-16

    申请号:US12950683

    申请日:2010-11-19

    IPC分类号: B66B1/28

    CPC分类号: B66B1/34 B66B5/0031 B66B13/22

    摘要: In a network for a safety system in a transportation system, the transportation system includes a shaft and a car arranged in the shaft. A first wall node is at a first end of the shaft and a second wall node is at a second end of the shaft to communicate safety messages with the car. Each wall node includes at least one wireless transceiver connected to one or more antennas. Each car in the shaft includes at least two wireless transceiver connected to one or more antennas, wherein the first transceiver of the car uses a first frequency and the second transceiver of the car uses a second frequency to communicate each safety messages in duplicate. A wired backbone connects the set of wall nodes to a controller of the safety system of the transportation system.

    摘要翻译: 在用于运输系统中的安全系统的网络中,运输系统包括布置在轴中的轴和轿厢。 第一壁节点位于轴的第一端,并且第二壁节点位于轴的第二端,以将安全信息与轿厢通信。 每个墙壁节点包括连接到一个或多个天线的至少一个无线收发器。 轴中的每个汽车包括连接到一个或多个天线的至少两个无线收发器,其中汽车的第一收发器使用第一频率,并且汽车的第二收发器使用第二频率来重复地传送每个安全消息。 有线骨干将该组墙壁节点连接到运输系统的安全系统的控制器。

    Method for Scheduling Data Transmission in Hybrid Communication Networks for Transportation Safety Systems
    7.
    发明申请
    Method for Scheduling Data Transmission in Hybrid Communication Networks for Transportation Safety Systems 有权
    运输安全系统混合通信网络数据传输调度方法

    公开(公告)号:US20120147879A1

    公开(公告)日:2012-06-14

    申请号:US12979777

    申请日:2010-12-28

    IPC分类号: H04W72/04 H04W56/00

    CPC分类号: H04W72/1242

    摘要: A hybrid communication network for a transportation safety system includes a fixed wired nodes and mobile wireless nodes. Because the wired nodes operate independently packets transmitted by the wired nodes to the wireless nodes need to be synchronized. A downlink travel time for downlink packets traveling from a controller to the wireless nodes is determined. Then, the controller schedules downlink data intervals (DDI) based on the downlink travel time; and transmits downlink packets to the wireless nodes during the DDI, such that a latency requirement of the transportation safety system is satisfied.

    摘要翻译: 用于运输安全系统的混合通信网络包括固定有线节点和移动无线节点。 由于有线节点独立运行,有线节点传输到无线节点的数据包需要同步。 确定从控制器到无线节点的下行链路分组的下行链路行进时间。 然后,控制器基于下行链路行进时间调度下行链路数据间隔(DDI); 并且在DDI期间向无线节点发送下行链路分组,使得满足运输安全系统的等待时间要求。

    Wireless Communication Network for Transportation Safety Systems
    8.
    发明申请
    Wireless Communication Network for Transportation Safety Systems 失效
    运输安全系统无线通信网络

    公开(公告)号:US20120129458A1

    公开(公告)日:2012-05-24

    申请号:US12950683

    申请日:2010-11-19

    IPC分类号: H04B7/00

    CPC分类号: B66B1/34 B66B5/0031 B66B13/22

    摘要: In a network for a safety system in a transportation system, the transportation system includes a shaft and a car arranged in the shaft. A first wall node is at a first end of the shaft and a second wall node is at a second end of the shaft to communicate safety messages with the car. Each wall node includes at least one wireless transceiver connected to one or more antennas. Each car in the shaft includes at least two wireless transceiver connected to one or more antennas, wherein the first transceiver of the car uses a first frequency and the second transceiver of the car uses a second frequency to communicate each safety messages in duplicate. A wired backbone connects the set of wall nodes to a controller of the safety system of the transportation system.

    摘要翻译: 在用于运输系统中的安全系统的网络中,运输系统包括布置在轴中的轴和轿厢。 第一壁节点位于轴的第一端,并且第二壁节点位于轴的第二端,以将安全信息与轿厢通信。 每个墙壁节点包括连接到一个或多个天线的至少一个无线收发器。 轴中的每个汽车包括连接到一个或多个天线的至少两个无线收发器,其中汽车的第一收发器使用第一频率,并且汽车的第二收发器使用第二频率来重复地传送每个安全消息。 有线骨干将该组墙壁节点连接到运输系统的安全系统的控制器。

    Method and system for determining locations of moving objects with maximum length sequences
    9.
    发明授权
    Method and system for determining locations of moving objects with maximum length sequences 失效
    用于确定具有最大长度序列的移动物体的位置的方法和系统

    公开(公告)号:US08121805B2

    公开(公告)日:2012-02-21

    申请号:US12571226

    申请日:2009-09-30

    IPC分类号: G01B7/04 G06F15/00

    CPC分类号: G01B7/003

    摘要: A location of an object is determined by arranging a sequence of bits on a substrate. The sequence of bits includes subsequence of bits, and each subsequence of bits is unique for each location along the substrate. When the object is at a particular location along the substrate a sensor detects the subsequence of bits at the particular location, and a decoder associates the location of the subsequence at the particular location with the object. The substrate can be a leaky coaxial cable with slits or not, corresponding to the bits, or lane markings on a road.

    摘要翻译: 通过在衬底上布置位序列来确定对象的位置。 比特序列包括比特的子序列,并且比特的每个子序列对于沿着基底的每个位置是唯一的。 当物体沿着衬底处于特定位置时,传感器检测特定位置处的位的子序列,并且解码器将特定位置处的子序列的位置与对象相关联。 衬底可以是具有狭缝的泄漏同轴电缆,对应于道路上的位或车道标记。