公开(公告)号：US20110090835A1

公开(公告)日：2011-04-21

申请号：US12934804

申请日：2009-03-30

申请人： Hiroshi Furukawa ,  Kei Mitsunaga

发明人： Hiroshi Furukawa ,  Kei Mitsunaga

IPC分类号： H04H20/71

CPC分类号： H04W40/06 ,  H04W40/22 ,  H04W72/046 ,  H04W84/18

摘要： There are proposed: a network system capable of realizing packet forwarding higher in packet forwarding efficiency than in conventional Intermittent Periodic Transmit (IPT) using omni-directional antennas; and the like. Directional antennas are applied to the IPT, and each of slave nodes waits for reception of downlink packets by a directional antenna for receiving the downlink packets in a reception waiting state therefor. Moreover, the downlink packets are treated like polling control signals, and uplink packets are transmitted at a reception time of the downlink packets, whereby a hidden node problem and a carrier sensing problem can be avoided. Furthermore, in accordance with routing protocol in which each of nodes changes directivity randomly by a route formation process, it becomes possible to form a more suitable route.

摘要翻译： 提出了一种能够实现分组转发效率高于使用全向天线的常规间歇周期发射（IPT）的分组转发的网络系统; 等等。 定向天线被应用于IPT，并且每个从节点通过定向天线等待下行链路分组的接收，以在其接收等待状态中接收下行链路分组。 此外，下行链路分组被视为轮询控制信号，并且在下行链路分组的接收时间发送上行链路分组，由此可以避免隐藏节点问题和载波感测问题。 此外，根据其中每个节点通过路由形成过程随机地改变方向性的路由协议，可以形成更合适的路由。

公开(公告)号：US09220047B2

公开(公告)日：2015-12-22

申请号：US12934804

申请日：2009-03-30

申请人： Hiroshi Furukawa ,  Kei Mitsunaga

发明人： Hiroshi Furukawa ,  Kei Mitsunaga

IPC分类号： H04H20/71 ,  H04W40/06 ,  H04W40/22 ,  H04W72/04 ,  H04W84/18

CPC分类号： H04W40/06 ,  H04W40/22 ,  H04W72/046 ,  H04W84/18

摘要： There are proposed: a network system capable of realizing packet forwarding higher in packet forwarding efficiency than in conventional Intermittent Periodic Transmit (IPT) using omni-directional antennas; and the like. Directional antennas are applied to the IPT, and each of slave nodes waits for reception of downlink packets by a directional antenna for receiving the downlink packets in a reception waiting state therefor. Moreover, the downlink packets are treated like polling control signals, and uplink packets are transmitted at a reception time of the downlink packets, whereby a hidden node problem and a carrier sensing problem can be avoided. Furthermore, in accordance with routing protocol in which each of nodes changes directivity randomly by a route formation process, it becomes possible to form a more suitable route.

摘要翻译： 提出了一种能够实现分组转发效率高于使用全向天线的常规间歇周期发射（IPT）的分组转发的网络系统; 等等。 定向天线被应用于IPT，并且每个从节点通过定向天线等待下行链路分组的接收，以在其接收等待状态中接收下行链路分组。 此外，下行链路分组被视为轮询控制信号，并且在下行链路分组的接收时间发送上行链路分组，由此可以避免隐藏节点问题和载波感测问题。 此外，根据其中每个节点通过路由形成过程随机地改变方向性的路由协议，可以形成更合适的路由。