公开(公告)号：US11075720B2

公开(公告)日：2021-07-27

申请号：US16614257

申请日：2017-05-16

Applicant: ABB Power Grids Switzerland AG

Inventor： Zhibo Pang ,  Dacfey Dzung ,  Mikael Davidsson

IPC: H02J3/36 ,  H04L1/20 ,  H04L1/16

Abstract: A communications network for communication between at least one power electronics element and at least one control unit is disclosed. At least one transmit/receive unit of the communications network is configured to receive at least one signal from an upstream direction, and evaluate if the at least one signal is correctly received. In case the at least one signal is correctly received, the at least one transmit/receive unit is configured to forward, in an allocated first time slot, the at least one signal to a plurality of transmit/receive units in a downstream direction, and receive, in an allocated second time slot, a plurality of signals from the plurality of transmit/receive units as a response of the forwarded at least one signal.

公开(公告)号：US20220094552A1

公开(公告)日：2022-03-24

申请号：US17429137

申请日：2020-02-05

Applicant: ABB Power Grids Switzerland AG

Inventor： Dacfey Dzung ,  Thanikesavan Sivanthi

IPC: H04L9/32

Abstract: The present invention provides a method for message authentication, in particular in case of low of transmission or storage capacities. The present invention further provides corresponding devices for generating or sending authenticated messages and for receiving or retrieving authenticated messages as well as a system comprising such devices. In an embodiment, the method may comprise (a) preparing a data block having an uncompressed length; (b) compressing the data block so that the data block has a compressed length smaller than the uncompressed length; (c) determining an available length from at least the compressed length and a maximum length of a data frame; (d) calculating a message authentication code, MAC, from at least the data block, having a MAC length not greater than the available length; and (e) creating the data frame, comprising the data block and the MAC.

公开(公告)号：US20210250842A1

公开(公告)日：2021-08-12

申请号：US16973147

申请日：2019-05-15

Applicant: ABB Power Grids Switzerland AG

Inventor： Zhibo Pang ,  Xiaolin Jiang ,  Dacfey Dzung ,  Michele Luvisotto ,  Roger Jansson ,  Carlo Fischione

IPC: H04W40/16 ,  H04L27/26 ,  H04B17/336

Abstract: A method (100) of route selection in a wireless communication system and a control system (40) is provided. The method includes selecting a route between a first node (1) and a second node (2) and comprises: —evaluating (110) a plurality of possible routes (R1, R2, R3, R4), at least one route (R2, R3, R4) including a third node (3, 4) between the first and the second node; and —selecting (160) the route that has the lowest latency among the possible routes. Especially the method (100) includes: —selecting (120) parameter settings for each link of the possible routes, said selecting (120) comprising; —selecting (130) the length of the cyclic prefix, —evaluating (140) combinations of the selected cyclic prefix and different settings of the at least one further parameter of the physical layer; —selecting (150) the parameter settings that has lowest estimated latency and fulfils at least one communication quality criterion.

公开(公告)号：US11177857B2

公开(公告)日：2021-11-16

申请号：US16467385

申请日：2016-12-21

Applicant: ABB Power Grids Switzerland AG

Inventor： Pang Zhibo ,  Dacfey Dzung ,  Mikael Davidsson

IPC: H04L23/00 ,  H04B3/54 ,  H04W4/80 ,  H02M7/86 ,  H04B10/80 ,  H02J13/00

Abstract: A communications network for communication between at least one power electronics element and at least one control unit is disclosed. According to one or more embodiments, the communications network can be described as a communications network having parts or portions thereof employing multi-hop and/or hybrid communication.