Method for monitoring a communication media access schedule of a communication controller of a communication system

US7586953B2 · kind B2 · utility

Assignees

• Robert Bosch GmbH · DE
• Bayerische Motoren Werke Aktiengesellschaft · DE
• Daimlerchrysler AG · US
• Freeescale Semiconductor, Inc. · US
• GM GLOBAL TECHNOLOGY OPERATIONS LLC · US
• NXP B.V. · NL

Inventors

• Thomas M. Forest · Chesterfield Township, US
• Bernd Hedenetz · Köngen, DE
• Mathias Rausch · Borgo San Lazzaro, DE
• Christopher Temple · Munich, DE
• Harald Eisele · Pinneberg, DE
• Bernd Uwe Gerhard Elend · Hamburg, DE
• Jörn Ungermann · Aachen, DE
• Matthias Kühlewein · Bingen, DE
• Ralf Belschner · Neckartenzlingen, DE
• Peter Lohrmann · Eislingen/Fils, DE
• Florian Bogenberger · Poing, DE
• Thomas Wuerz · Poing, DE
• Arnold W. Millsap · Leonard, US
• Patrick Heuts · Nijmegen, NL
• Robert Hugel · Kaufering, DE
• Thomas Fuhrer · Gerlingen, DE
• Bernd Müller · Moers, DE
• Florian Hartwich · Reutlingen, DE
• Manfred Zinke · Aachen, DE
• Josef Berwanger · Poing, DE
• Christian Ebner · Munich, DE
• Harald Weiler · Göppingen, DE
• Peter Fuhrmann · Dormagen, DE
• Anton Schedl · Munich, DE
• Martin Peller · Birkenfeld, DE

Key dates

• Filing date: Jul 7, 2003
• Grant date: Sep 8, 2009
• Expiry date: Nov 18, 2025

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L2012/6459
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

The invention refers to a method for monitoring a communication media access schedule of a communication controller (5) of a communication system (1) by means of a bus guardian (6). The communication system (1) comprises a communication media (2) and nodes (3) connected to the communication media (2). Each node (3) comprises a communication controller (5) and a bus guardian (6) assigned to the communication controller (5). Messages are transmitted among the nodes (3) across the communication media (2) based on a cyclic time triggered communication media access scheme. In order to provide a mechanism which allows the bus guardian (6) to monitor the communication media access scheme of the communication controller (5) even during startup of the communication it is suggested, that the bus guardian (6) has a priori knowledge about possible deviations from the communication media access schedule during startup of the communication and that the bus guardian (6) during startup makes use of the a priori knowledge to distinguish between an allowed deviation and a forbidden deviation caused by a failure of the communication controller (5).