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    • 7. 发明申请
    • DATA BROADCASTING WITH A PREPARE-TO-BROADCAST MESSAGE
    • 数据广播与准备广播消息
    • US20140321384A1
    • 2014-10-30
    • US14323782
    • 2014-07-03
    • Itron, Inc.
    • Viet-Hung NguyenJerome BartierFabrice MonierBastien Mainaud
    • H04W72/00H04B1/713
    • H04W72/005H04B1/713H04W72/04H04W72/0406
    • Techniques for broadcasting data in a multi-channel network having a control channel and multiple data channels are described. A node wishing to broadcast data may determine a particular data channel from among the multiple data channels, a modulation technique, and a data rate to be utilized to broadcast the data. The broadcasting node may transmit a message over the control channel indicating that the data will be broadcast on the particular data channel using the modulation technique and at the determined data rate. The broadcasting node and a node wishing to receive the data may switch to the particular data channel. The broadcast node may broadcast the data over the particular data channel, while the receiving node may receive the data. After broadcasting the data or a predetermined time period has expired, the broadcasting node and receiving node may switch to the control channel.
    • 描述了在具有控制信道和多个数据信道的多信道网络中广播数据的技术。 希望广播数据的节点可以从多个数据信道中确定特定数据信道,调制技术和用于广播数据的数据速率。 广播节点可以通过控制信道发送指示使用调制技术并以确定的数据速率在特定数据信道上广播数据的消息。 广播节点和希望接收数据的节点可以切换到特定的数据信道。 广播节点可以在特定数据信道上广播数据,而接收节点可以接收数据。 在广播数据或预定时间段已经过去之后,广播节点和接收节点可以切换到控制信道。
    • 8. 发明授权
    • Efficient multicast in a smart grid
    • 智能电网中的高效多播
    • US08804724B2
    • 2014-08-12
    • US13648039
    • 2012-10-09
    • Itron, Inc.
    • Daniel PopaJorjeta Gueorguieva JetchevaMehdi ManiBastien MainaudViet-Hung Nguyen
    • H04L12/56
    • H04L12/185H04L12/1863H04L12/1886
    • In a wireless and/or power line communication (PLC) network environment, techniques for multicast of data and management of multicast groups assist in regulating bandwidth consumption and provision of desired multicast data. Nodes indicate interest in multicast groups by transmission of reports upstream. Report transmission may be suppressed to balance bandwidth with need for multicast data. Multicast data packets may be retransmitted downstream to fulfill requests indicated by the reports at a rate and/or frequency based on multicast packet duplication or redundancy. Information, such as broken links or “leave” packets, may indicate that one or more downstream nodes should be removed from a forwarding state. However such removal may impact other nodes. A query may be transmitted downstream, to determine if retransmission/forwarding of multicast retransmissions should continue. Query transmission may be based on a balance between query bandwidth consumption and the needs of downstream nodes.
    • 在无线和/或电力线通信(PLC)网络环境中,用于多播数据和多播组管理的技术有助于调节带宽消耗和提供期望的多播数据。 节点通过上传报告来表示对多播组的兴趣。 可以抑制报告传输,以平衡具有组播数据需求的带宽。 多播数据分组可以在下游重传,以基于多播分组复制或冗余的速率和/或频率来满足报告所指示的请求。 诸如断开的链接或“离开”分组之类的信息可以指示一个或多个下游节点应当从转发状态移除。 但是这种删除可能会影响其他节点。 可以向下游发送查询,以确定是否应继续重传/转发多播重传。 查询传输可以基于查询带宽消耗与下游节点需求之间的平衡。