Semantic deduplication

Patent metadata

Field	Value
Publication number	US-9952919-B2
Application number	US-201415028461-A
Country	US
Kind code	B2
Filing date	Aug 26, 2014
Priority date	Oct 11, 2013
Publication date	Apr 24, 2018
Grant date	Apr 24, 2018

Abstract

In order to reduce data traffic in a network, a master node sends master data to at least one checking instance. The master data are checked by the checking instance. In the absence of errors, either the master data or slave data determined by the slave node are sent by the checking instance to the data-processing unit. When an error is recognized, all master data and slave data available at the checking instance are sent by the checking instance to the data-processing unit.

First claim

What is claimed is:

1. A method for reducing the data traffic in a network, the method comprising:
sending master data from a master node to at least one checking entity comprising a slave node;
checking, by the checking entity, the master data for an error;
if no error is identified by the checking step, sending either the master data or slave data determined by the slave node from the checking entity to the data processing unit;
if an error is identified by the checking step, sending all master data and slave data available on the checking entity from the checking entity to a data processing unit.

2. The method of claim 1 , wherein the master node, the checking entity and the data processing unit are arranged in a ring topology.

3. The method of claim 1 , wherein the slave node checks the master data by performing the same operations as the master node and thereby produces slave data that are redundant in relation to the master data.

4. The method of claim 1 , wherein the slave node performs the same operations as the master node only if the checking entity has identified an error.

5. The method of claim 1 , wherein a network coupler that is separate from the slave node comprises the checking entity.

6. The method of claim 1 , wherein the master node comprises a further checking entity.

7. A system comprising:
a master node;
a slave node; and
a data processing unit;
wherein the master node, the slave node, and the data processing unit are connected to a ring topology;
wherein the master node is configured to send master data determined by the master node to the data processing unit and to the slave node, respectively, in different ring directions;
wherein the slave node is configured to send slave data determined by the slave node to the data processing unit and to the master node, respectively, in different ring directions; and
wherein the slave node is configured to check the master data, to send only the master data or the slave data to the data processing unit during normal operation, and to send both the master data and the slave data to the data processing unit in the event of an identification of an error.

8. The system of claim 7 , wherein the master node is configured to check the slave data, to send only the slave data or the master data to the data processing unit during normal operation, and to send both the master data and the slave data to the data processing unit in the event of an identification of an error.

9. The system of claim 7 , wherein the data processing unit is configured to execute a countermeasure in the event of the master node or the slave node failing.

10. The system of claim 7 , wherein at least one of the master node or the slave node is configured to identify a failure of a communication link between the master node and the slave node and to send degradation information to the data processing unit in the event of a failure being identified.

11. The system of claim 7 , wherein:
the data processing unit is configured to send status information to the master node in the event of a failure of a communication link between the slave node and the data processing unit, and
the master node is configured to forward slave data received from the slave node to the data processing unit in the event of a degradation being identified.

12. The system of claim 7 , wherein:
the data processing unit is configured to send status information to the slave node in the event of a failure of a communication link between the master node and the data processing unit, and
the slave node is configured to forward slave data received from the master node to the data processing unit in the event of a degradation being identified.

13. A method for reducing the data traffic in a network including a master node, a slave node, and a data processing unit connected to a ring topology, the method comprising:
sending master data determined by the master node to the data processing unit and to the slave node, respectively, in different ring directions;
sending slave data determined by the slave node to the data processing unit and to the master node, respectively, in different ring directions;
checking the master data by the slave node,
if the checking of the master data indicates normal operation, the slave node sending only the master data or only the slave data to the data processing unit, and
if the checking of the master data indicates an error, the slave node sending both the master data and the slave data to the data processing unit.

14. The method of claim 13 , wherein the master node checks the slave data and sends only the slave data or only the master data to the data processing unit during normal operation, and sends both the master data and the slave data to the data processing unit in the event of an error being identified.

Assignees

• Siemens Ag

Inventors

• Feld Joachim
• Fiege Ludger
• Riedl Johannes
• Schmid Thomas
• Zirkler Andreas

Classifications

• G06F11/1637

  using additional compare functionality in one or some but not all of the redundant processing components · CPC title

• G06F11/183

  by voting, the voting not being performed by the redundant components · CPC title

• G06F11/3013

  where the computing system is an embedded system, i.e. a combination of hardware and software dedicated to perform a certain function in mobile devices, printers, automotive or aircraft systems (testing or monitoring of control systems or parts thereof G05B23/02) · CPC title

• G06F11/165

  with continued operation after detection of the error · CPC title

• H04L12/42

  Loop networks · CPC title