Zinsinger, Norbert

In a (e.g., ethernet-based PTP) time-distribution system, time receivers unicast (rather than multicast) delay-request messages and time transmitters unicast (rather than multicast) corresponding delay-response messages . An intervening transparent clock using a two-step delay request mode forwards unicast delay-request messages without modification, enabling the time transmitter to learn the media access control (MAC) address of the time receiver from the SMAC address in a delay-request message and use that MAC address as the DMAC address in the corresponding unicast delay-response message that enables the transparent clock to forward the unicast delay-response message towards the appropriate time receiver. As such, the volume of messages and the burden on transparent clocks to handle superfluous messages in such systems are reduced.

The present invention discloses an apparatus (200) for use by a coherent receiver, comprising means for: obtaining a first set of coefficients (w⁺, A⁺⁺) indicating a first filter (w, A) in an adaptive equalizer of the coherent receiver, wherein the first filter (w, A) is an adaptive Multi-Input Multi-Output, MIMO, filter with N taps in each branch, wherein N is an integer number; determining a further set of coefficients (f_xx, f_yx, f_xy, f_yy) indicating a MIMO filter with a single tap in each branch based on the first set of coefficients (w⁺, A⁺⁺); determining a first matrix (F) based on the further set of coefficients (f_xx, f_yx, f_xy, f_yy); orthogonalizing the first matrix (F), thereby obtaining an orthogonalized matrix (Q); determining a state-of-polarization based on at least part of the orthogonalized matrix (Q).

The present invention discloses an apparatus for use by a coherent receiver, comprising means for: obtaining a first set of coefficients (A+ ) indicating a first adaptive filter (A) configured to reduce at least part of polarization mode dispersion in an equalizer of the coherent receiver and a second set of coefficients (w+ ) indicating a second adaptive filter (w) configured to reduce at least part of the inter-symbol interference in the equalizer of the coherent receiver, determining a first updated set of coefficients (A++ ) and a second updated set of coefficients (w++ ) based on the first set of coefficients (A+ ) and the second set of coefficients (w+ ), wherein the gains of the first updated set of coefficients (A++ ) have a predetermined level, and wherein, the output of the equalizer based on the first set of coefficients (A+ ) and the second set of coefficients (w+ ) is approximately same as the output of the equalizer based on the first updated set of coefficients (A++ ) and the second updated set of coefficients (w++ ), providing the first updated set of coefficients (A++ ) and the second updated set of coefficients (w++ ) to the first filter and the second filter respectively.

The present invention discloses an apparatus for use by an optical network unit, ONU, communicatively connected to an Optical Line Terminal, OLT, comprising means for: configuring a first operation parameter of a first laser (Tx) to be a reference value (T_Tx,ref), thereby the emission frequency of the first laser (Tx) is aligned to a frequency of a downstream signal; determining a target value (T_Tx) of the first operation parameter of the first laser (Tx) based on: a predetermined deviation (ΔT_Tx=T_Tx-T_Tx,ref) between the target value (T_Tx) and the reference value (T_Tx,ref), and the reference value of the first operation parameter (T_Tx,ref); configuring the first operation parameter of the first laser (Tx) to be the target value, thereby the emission frequency of the first laser (Tx) is aligned to a predetermined frequency for an upstream signal; transmitting upstream signals to the OLT by modulating the output of the first laser (TX).

Die Erfindung betrifft ein Verfahren zur Herstellung eines Mehrschichtkörpers (1), wobei bei einem Zusammenpressen einer Strukturschicht (2) samt eines Oberflächenreliefs (21), einer Außenschicht (3) und eines Schichtgebildes (4) die Strukturschicht (2) zumindest in die Außenschicht (3) eingepresst wird, so dass das Oberflächenrelief (21) in einer Vertiefung (5) im Mehrschichtkörper (1) zumindest teilweise freiliegend ist. Die Erfindung betrifft zudem einen Mehrschichtkörper (1) sowie einen Außenschichtverbund (30) und dessen Verwendung zur Herstellung des Mehrschichtkörpers (1).

In certain embodiments involving a Precision Time Protocol (PTP) time transmitter connected to a PTP time receiver over a link aggregation group (LAG), the receiver uses a table of delay values to compensate for differences in average transmission delay over the different LAG links when synchronizing its local clock with the transmitter's reference clock. When a LAG link is added or changed, the transmitter and receiver perform a link-delay-calibration operation to calculate the delay to be used for subsequent synchronization operations.

In certain embodiments involving a Precision Time Protocol (PTP) time transmitter connected to a PTP time receiver over a link aggregation group (LAG), the receiver suspends normal LAG processing during PTP clock-sync operations to ensure that a PTP Delay-Request message is transmitted to the transmitter over the same LAG link used by the transmitter to transmit the corresponding PTP Sync message to the receiver in order to avoid errors resulting from different LAG links having different average transmission delays.

Various example embodiments of a secure communication capability are presented. The secure communication capability may be configured to support use of a Media Access Control (MAC) Security Tag (SecTag) header, within the context of Media Access Control Security (MACsec) or any Open Systems Interconnection (OSI) layer capable of using the SecTag header, to secure communications between communication devices. The secure communication capability may be configured to support use of packet numbers (PNs), including 64-bit PNs, within the SecTag header. The secure communication capability may be configured to support use of 64-bit PNs by encoding 64-bit PNs within a Packet Number (PN) field of the SecTag header. The secure communication capability may be configured to support use of 64-bit PNs within the MAC SecTag header in a manner for supporting use of PN partitioning for secure communication over multi-link paths.

Die Erfindung betrifft ein Verfahren zur Herstellung eines Bauteils, wobei bei dem Verfahren folgende Schritte, insbesondere in der folgenden Abfolge, durchgeführt werden: Bereitstellen zumindest eines oberen Werkzeugträgers und zumindest eines unteren Werkzeugträgers, wobei der zumindest eine obere Werkzeugträger zumindest zwei obere Werkzeugmodule und der zumindest eine untere Werkzeugträger zumindest ein unteres Werkzeugmodul aufweist; Verfahren des zumindest einen oberen Werkzeugträgers und/oder des zumindest einen unteren Werkzeugträgers in zumindest einer Richtung in zumindest eine vorbestimmte Position; Kombination eines ersten oberen Werkzeugmoduls der zumindest zwei oberen Werkzeugmodule des zumindest einen oberen Werkzeugträgers und eines ersten unteren Werkzeugmoduls des zumindest einen ersten unteren Werkzeugmoduls des zumindest einen unteren Werkzeugträgers in der zumindest einen vorbestimmten Position derart, dass eine oder mehrere Arbeitsstationen zur Durchführung zumindest eines Herstellungsschritts des Bauteils ausgebildet werden; Durchführung des zumindest einem Herstellungsschritts zur Ausbildung des Bauteils, sowie eine Vorrichtung zur Herstellung eines Bauteils.

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