公开(公告)号：WO2020161201A1

公开(公告)日：2020-08-13

申请号：PCT/EP2020/052897

申请日：2020-02-05

Applicant: ABB SCHWEIZ AG

Inventor： DZUNG, Dacfey ,  SIVANTHI, Thanikesavan

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：WO2018215073A1

公开(公告)日：2018-11-29

申请号：PCT/EP2017/062727

申请日：2017-05-26

Applicant: ABB SCHWEIZ AG

Inventor： PANG, Zhibo ,  DZUNG, Dacfey

IPC: H02J7/02

Abstract: A communication element (41-43) is disclosed for use in conjunction with a communications system (100) for transmitting at least one control signal to and/or receiving at least one message from at least one power electronics module (11-19). The communication element (41-43) comprises a plurality of antennas (51-53, 54-56, 57-59) capable of wireless communication. The communication element (41-43) is configured to transmit the at least one control signal to and/or receive the at least one message from the at least one power electronics module (11-19) by means of the plurality of antennas (51-53, 54-56, 57-59) in accordance with at least one beamforming method.

公开(公告)号：WO2019242943A1

公开(公告)日：2019-12-26

申请号：PCT/EP2019/062497

申请日：2019-05-15

Applicant: ABB SCHWEIZ AG

Inventor： ZHIBO, Pang ,  JIANG, Xiaolin ,  DZUNG, Dacfey ,  LUVISOTTO, Michele ,  JANSSON, Roger ,  FISCHIONE, Carlo

IPC: H04W40/12 ,  H04L12/727 ,  H04W40/00

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：WO2018210413A1

公开(公告)日：2018-11-22

申请号：PCT/EP2017/061771

申请日：2017-05-16

Applicant: ABB SCHWEIZ AG

Inventor： PANG, Zhibo ,  DZUNG, Dacfey ,  DAVIDSSON, Mikael

IPC: H04L1/18 ,  H04L1/00

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：WO2004021661A1

公开(公告)日：2004-03-11

申请号：PCT/CH2003/000594

申请日：2003-09-01

Applicant: ABB SCHWEIZ AG ,  DZUNG, Dacfey ,  HOFF, Thomas, Von ,  BENNINGER, Hans ,  RAMSEIER, Stefan

Inventor： DZUNG, Dacfey ,  HOFF, Thomas, Von ,  BENNINGER, Hans ,  RAMSEIER, Stefan

IPC: H04L27/26

CPC classification number: H04L27/2637 ,  H04L27/02 ,  H04L27/265 ,  H04L27/34

Abstract: In order to transmit a combination of modulated analog and digital signals in which a digital data signal (D 1 ) is modulated by means of singlecarrier quadrature amplitude modulation (QAM) or by means of multicarrier Orthogonal Frequency Division Multiplex (OFDM) modulation and an analog signal (A 1 ) is modulated by means of single side band modulation (SSB), a singlecarrier or multicarrier quadrature amplitude base modulation of the digital data signal (D 1 ) and an SSB base modulation of the analog signal (A 1 ), is performed. Corresponding components of the modulated and optionally upsampled digital ( u m I , o m I , u m Q ,O m Q )and analog ( s m I , s m Q ) signals are added, and a carrier frequency modulation (4) of the added components is performed. In a receiver, the same carrier frequency demodulator (8) is used for the superimposed modulated analog and digital signals, which then are base band demodulated separately (5, 6, 7). The invention reduces the total computational effort for modulating the digital and analog signals by performing the carrier frequency modulation or demodulation only once.

Abstract translation: 为了传输其中数字数据信号（D1）通过单载波正交幅度调制（QAM）或通过多载波正交频分复用（OFDM）调制和模拟信号（QAM）进行调制的调制模拟和数字信号的组合 （A1）通过单边带调制（SSB）进行调制，执行数字数据信号（D1）的单载波或多载波正交幅度基本调制和模拟信号（A1）的SSB基本调制。 调制和可选的上采样数字（u> I，o> I，u> Q，O Q）和模拟（s> I，s Q）信号的相应分量 并且执行附加分量的载波频率调制（4）。 在接收机中，相同的载波频率解调器（8）用于重叠调制的模拟和数字信号，然后分别对基带进行基带解调（5,6,7）。 本发明通过仅执行载波频率调制或解调一次来减少用于调制数字和模拟信号的总计算量。

公开(公告)号：WO2019158182A1

公开(公告)日：2019-08-22

申请号：PCT/EP2018/053526

申请日：2018-02-13

Applicant: ABB SCHWEIZ AG

Inventor： ZHIBO, Pang ,  LUVISOTTO, Michele ,  DZUNG, Dacfey

IPC: H04L27/26

Abstract: There is provided mechanisms for frequency offset estimation in a wireless communication network for power grid control. The wireless communication network employs time based scheduling of packets. A method is performed by a packet receiver in the wireless communication network. The method comprises receiving a packet from a packet transmitter. The packet comprises a preamble. The preamble is composed of samples of a single OFDM symbol. The preamble has a CP defined by a repetition of samples from an end- portion of the preamble. The preamble, except for the CP, is free from any repeated sequence of samples. The method comprises determining a sequence of similarity measure values (ie. correlation) between the CP of the preamble and the end-portion of the preamble. The method comprises applying a low-pass filter to the sequence of similarity measure values, resulting in a filtered sequence of similarity measure values. The method comprises performing frequency offset estimation on the filtered sequence of similarity measure values.

公开(公告)号：WO2019158181A1

公开(公告)日：2019-08-22

申请号：PCT/EP2018/053524

申请日：2018-02-13

Applicant: ABB SCHWEIZ AG

Inventor： ZHIBO, Pang ,  LUVISOTTO, Michele ,  DZUNG, Dacfey

IPC: H04L27/26

Abstract: There is provided mechanisms for packet detection in a wireless communication network for power grid control. The wireless communication network employs time based scheduling of packets. A method is performed by a packet receiver in the wireless communication network. The method comprises receiving a packet from a packet transmitter. The packet comprises a preamble. The preamble is composed of a single OFDM symbol and represented by a sequence of samples. At least part of the preamble is received within a packet detection window (contention based). The method comprises performing packet detection in order to find start of the packet only on those samples received within the packet detection window.

公开(公告)号：WO2018113960A1

公开(公告)日：2018-06-28

申请号：PCT/EP2016/082233

申请日：2016-12-21

Applicant: ABB SCHWEIZ AG

Inventor： PANG, Zhibo ,  DZUNG, Dacfey ,  DAVIDSSON, Mikael

IPC: H02J3/36 ,  H02J13/00 ,  H02M1/08

Abstract: A communications network (10-15) for communication between at least one power electronics element (20, 21, 28) and at least one control unit (30) is disclosed. According to one or more embodiments of the present invention, the communications network (10-15) can be described as a communications network (10-15) having parts or portions thereof employing multi-hop and/or hybrid communication.

公开(公告)号：WO2017134272A1

公开(公告)日：2017-08-10

申请号：PCT/EP2017/052461

申请日：2017-02-03

Applicant: ABB SCHWEIZ AG

Inventor： DZUNG, Dacfey

IPC: H04L25/03

CPC classification number: H04L25/03159 ,  H04L25/0212 ,  H04L25/0228

Abstract: The present invention is concerned with Cosine Modulated Filter Band modulation, in particular for a matrix equalizer for equalising a modulated signal carrying digital data, wherein the signal is modulated using a CMF6 and transmitted through a transmission channel having a channel impulse response c(t), wherein the matrix equalizer comprises: matrix coefficients W(i) determined based on the discrete-time matrix channel impulse response C(i) that is determined from the channel impulse response c(t); wherein the matrix equalizer is configured to equalize the modulated signal in order to reduce signal distortion introduced by the transmission channel. The present invention also concerns a method for equalising the CMFB modulated signal.

Abstract translation: 本发明涉及余弦调制滤波器频带调制，特别是用于均衡载有数字数据的调制信号的矩阵均衡器，其中该信号使用CMF6进行调制并通过传输信道传输，该传输信道具有 信道脉冲响应c（t），其中矩阵均衡器包括：根据由信道脉冲响应c（t）确定的离散时间矩阵信道脉冲响应C（i）确定的矩阵系数W（i）; 其中所述矩阵均衡器被配置为均衡所述调制信号以便减少由所述传输信道引入的信号失真。 本发明还涉及用于均衡CMFB调制信号的方法。

公开(公告)号：EP3412011A1

公开(公告)日：2018-12-12

申请号：EP17702413.0

申请日：2017-02-03

Applicant: ABB Schweiz AG

Inventor： DZUNG, Dacfey

IPC: H04L25/03

CPC classification number: H04L25/03159 ,  H04L25/0212 ,  H04L25/0228

Abstract: The present invention is concerned with Cosine Modulated Filter Band modulation, in particular for a matrix equalizer for equalising a modulated signal carrying digital data, wherein the signal is modulated using a CMFB and transmitted through a transmission channel having a channel impulse response c(t), wherein the matrix equalizer comprises: matrix coefficients W(i) determined based on the discrete-time matrix discrete-time matrix channel impulse response C(i) that is determined from the channel impulse response c(t); wherein the matrix equalizer is configured to equalize the modulated signal in order to reduce signal distortion introduced by the transmission channel. The present invention also concerns a method for equalising the CMFB modulated signal.