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Subscriber station for serial bus system and method for communication in serial bus system

A bus system and serial bus technology, applied in transmission systems, bus networks, digital transmission systems, etc., to achieve the effect of improving transmission rate and effective data rate

Pending Publication Date: 2022-07-08
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] If the CRC calculation in the case of CAN XL would be performed as in the case of CAN FD, CAN XL would have the same disadvantages as CAN FD

Method used

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  • Subscriber station for serial bus system and method for communication in serial bus system
  • Subscriber station for serial bus system and method for communication in serial bus system
  • Subscriber station for serial bus system and method for communication in serial bus system

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Embodiment Construction

[0044] figure 1 A bus system 1 is shown as an example, which is basically designed, in particular, for a CAN bus system, a CAN FD bus system, a CAN XL bus system and / or their variants, as will be described later. The bus system 1 can be used in vehicles, in particular motor vehicles, airplanes, etc., or in hospitals or the like.

[0045] exist figure 1 Here, the bus system 1 has a plurality of subscriber stations 10 , 20 , 30 , which are connected to a bus 40 with a first bus core 41 and a second bus core 42 , respectively. The bus cores 41 , 42 can also be called CAN_H and CAN_L or CAN-XL_H and CAN-XL_L and are used for signal coupling in the transmit state after input of a dominant level or generation of a recessive level or another level. electrical signal transmission. Via the bus 40, messages 45, 46 can be transmitted serially in the form of signals between the various subscriber stations 10, 20, 30. If an error occurs on bus 40 while communicating, such as via figur...

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Abstract

A subscriber station (10; 30) for a serial bus system (1) and a method for communication in a serial bus system (1) are provided. The subscriber station (10, 30) has a communication control device (11, 31) for controlling communication of the subscriber station (10, 30) with at least one other subscriber station (10, 20, 30) of the bus system (1), and a transmitting / receiving device (12; 32), which is designed to transmit data to the communication control device (11; 31) to a bus (40) of the bus system (1), and which is designed to serially receive signals from the bus (40) of the bus system (1), the communication control device (11; 31) is designed to generate a transmission signal (TXD) in accordance with a frame (450) and to insert a header checksum (HCRC) into the frame (450), in which only bits of a frame header located prior to a data field (455) set for valid data in the frame (450) are included, 31) is designed in such a way that the communication control device (11; 31) is designed to use, for the calculation of the header checksum (HCRC), a predetermined start value (RS) and a predetermined checksum polynomial (CRCP), in which case the intermediate result of the calculation of the header checksum (HCRC) for the portion of the frame header in which the dynamic padding bits are used is not equal to a zero vector.

Description

technical field [0001] The present invention relates to a subscriber station for a serial bus system and a method for communication in a serial bus system which operates at high data rates and with high flexibility and fault tolerance. Background technique [0002] For example, a bus system in a vehicle for communication between sensors and control devices should enable the transmission of large data volumes depending on the number of functions of the technical system or the vehicle. Here, it is generally required that data can be transferred from sender to receiver faster than before and that large data packets can also be transferred when required. [0003] On the vehicle side, the bus system is currently in an introduction phase in which data is transmitted as messages under the ISO 11898-1:2015 standard as the CAN protocol specification with CAN FD. These messages are transmitted between subscriber stations of the bus system, such as sensors, control devices, transmitte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/40
CPCH04L12/40013H04L1/0061H04L1/0007H04L12/40071H04L12/40084H04L12/4013H04L69/22H04L2001/0094H03M13/096H04L9/34H04L2012/40215
Inventor F·哈特维奇C·森格尔C·霍尔斯特A·穆特尔
Owner ROBERT BOSCH GMBH
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