公开(公告)号：US20150172992A1

公开(公告)日：2015-06-18

申请号：US14633619

申请日：2015-02-27

Applicant: ABB RESEARCH LTD

Inventor： Dacfey DZUNG ,  Yvonne-Anne PIGNOLET

IPC: H04W40/12 ,  H04W76/02

CPC classification number: H04W40/12 ,  H04L45/124 ,  H04L45/22 ,  H04W76/10 ,  Y02D70/22 ,  Y02D70/34

Abstract: The present disclosure encompasses establishing and maintaining a routing protocol based on a measured link metric p, such as for a smart grid communication system. A link between a first node such as a router A and a neighbouring second node B of a communication path from a source to a destination in a packet oriented communication network is selected wherein the two nodes are connected via first and second communication links. An updated link metric p(t+1) at a point in time t+1 of the first communication link is determined. The first or the second communication link is selected for transmitting a further packet from node A to node B by comparing the updated link metric p(t+1) to a threshold pthr.

Abstract translation: 本公开包括基于诸如智能电网通信系统的测量链路度量p来建立和维护路由协议。 选择在面向分组的通信网络中从源到目的地的通信路径的诸如路由器A的第一节点和相邻的第二节点B之间的链路，其中两个节点经由第一和第二通信链路连接。 确定在第一通信链路的时间点t + 1处的更新的链路量度p（t + 1）。 选择第一或第二通信链路，用于通过将更新的链路量度p（t + 1）与阈值pthr进行比较来从节点A向节点B发送另外的分组。

公开(公告)号：US20140036963A1

公开(公告)日：2014-02-06

申请号：US13949442

申请日：2013-07-24

Applicant: ABB RESEARCH LTD

Inventor： Dacfey DZUNG

IPC: H04B1/7073

CPC classification number: H04B1/7073 ,  G06F11/1658 ,  H02H3/28 ,  H02J3/08 ,  H04J3/0667

Abstract: A method and arrangement are provided for time synchronization between two geographically separated stationary clocks, such as first and second clocks located respectively at first and second ends of an AC power line. A first representation of an oscillating power line quantity is produced by measuring or recording the power line quantity at the first end of the power line, and time-stamping the first representation by the first clock. A second representation of the same oscillating power line quantity is produced by measuring the power line quantity at the second end of the power line, and time-stamping the second representation by the second clock. The first and second representations are compared to determine a clock offset between the first and second clocks. Based on the comparison, one or both of the first and second clocks are adjusted to reduce the determined clock offset.

Abstract translation: 提供了一种用于在两个地理上分离的静止时钟之间的时间同步的方法和装置，例如分别位于AC电力线的第一和第二端处的第一和第二时钟。 通过测量或记录电力线的第一端的电力线数量，并且通过第一时钟对第一表示进行时间戳，产生振荡电力线量的第一表示。 相同的振荡电力线量的第二表示是通过测量电力线的第二端的电力线数量，并且通过第二时钟对第二表示进行时间戳。 比较第一和第二表示以确定第一和第二时钟之间的时钟偏移。 基于比较，调整第一和第二时钟中的一个或两个以减少确定的时钟偏移。