US 11,943,068 B2
User station for a serial bus system and method for error signaling for a message received in a serial bus system
Florian Hartwich, Reutlingen (DE)
Assigned to ROBERT BOSCH GMBH, Stuttgart (DE)
Appl. No. 16/966,721
Filed by Robert Bosch GmbH, Stuttgart (DE)
PCT Filed Dec. 18, 2018, PCT No. PCT/EP2018/085623
§ 371(c)(1), (2) Date Sep. 9, 2020,
PCT Pub. No. WO2019/121763, PCT Pub. Date Jun. 27, 2019.
Claims priority of application No. 102017223774.0 (DE), filed on Dec. 22, 2017.
Prior Publication US 2021/0036813 A1, Feb. 4, 2021
Int. Cl. H04L 1/18 (2023.01); G06F 13/42 (2006.01); H04L 1/1829 (2023.01); H04L 1/1867 (2023.01); H04L 5/00 (2006.01); H04L 12/40 (2006.01); H04L 1/00 (2006.01)
CPC H04L 1/1896 (2013.01) [G06F 13/4204 (2013.01); G06F 13/4282 (2013.01); H04L 1/1848 (2013.01); H04L 1/188 (2013.01); H04L 5/0055 (2013.01); H04L 12/40032 (2013.01); H04L 2001/0094 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A user station for a serial bus system having user stations, comprising:
a communication control unit configured to create a message which is to be transmitted serially to a first at least one further user station of the bus system, or to read a message which has been received serially from a second at least one further user station of the bus system; and
a transceiver device configured to transmit the created message on a bus line to the first at least one further user station of the bus system or to receive a message from the bus line;
wherein the communication control unit and/or the transceiver device is configured to provide, in the created message to be transmitted, an ACK time window for an ACK signal and/or a NACK time window for a NACK signal for a signaling of whether or not the first at least one further user station has identified an error in the transmitted message, and the transceiver device is configured not to drive any level on bus line in the at least one provided time window during the transmission to the first at least one further user station, such that a recessive bus level arises with a value between a first bus level value and a second bus level value.