Bus system, subscriber station therefor, and method for configuring a static bus system for a dynamic communication

Patent metadata

Field	Value
Publication number	US-11245549-B2
Application number	US-201615745462-A
Country	US
Kind code	B2
Filing date	Jun 2, 2016
Priority date	Jul 17, 2015
Publication date	Feb 8, 2022
Grant date	Feb 8, 2022

Abstract

A bus system, a subscriber station, and a method for configuring a static bus system for a dynamic communication are provided. The bus system has at least two subscriber stations, a communications link for connecting the subscriber stations to each other, and at least one device for the dynamic communication between the subscriber stations of the bus system; the subscriber stations and the communications link are developed for the static communication, which is directed to messages to be transmitted on the bus system that are known when the bus system is made available and are configured according to specified transmitters and receivers, and the dynamic communication is directed to messages to be transmitted on the bus system that have become known only after the subscriber stations and the communications link have been made available and are configured according to specified transmitters and receivers.

First claim

The invention claimed is:

1. A bus system, comprising:
a plurality of subscriber stations; and
a communications link for connecting the plurality of subscriber stations to one another;
wherein:
one of the plurality of subscriber stations is a new station that was deployed into the bus system after others of the plurality of subscriber stations were deployed into, and communicated over, the communications link of the bus system;
one of the others of the plurality of subscriber stations includes a configuration indicating a type of information that another of the others of the plurality of subscriber stations transmits;
the another of the others of the plurality of subscriber stations is configured to transmit over the communications link and to the one of the others of the plurality of subscriber stations messages (a) that include a station identifier identifying the another of the others of the plurality of subscriber stations as transmitter of the message and (b) without inclusion of an information type identifier;
the new station is configured to include sensor based measurements as data in payloads of messages transmitted by the new station over the communications link and to the one of the others of the plurality of subscriber stations;
the new station includes a device for dynamic communication between the new station and the one of the others of the plurality of subscriber stations; and
the device for dynamic communication is configured to include in the messages transmitted by the new station to the one of the plurality of subscriber stations a first identifier identifying the new station as message transmitter and a second identifier, which is an information type identifier that identifies a type of the data in the payload as being measurements.

2. The bus system as recited in claim 1 , wherein a transmission of the messages on the bus system is carried out in a twofold priority-oriented manner, in which both a priority of the message and a priority of an allocated communications resource are taken into account.

3. The bus system as recited in claim 1 , wherein the plurality of subscriber stations each has a communications hardware and a communications software for a transmission of the messages via the communications link, the communications hardware, the communications software.

4. The bus system as recited in claim 1 , wherein the deployment of the others of the subscriber stations includes delivery of a product that includes the bus system, and the bus system is at least one of a bus system of a vehicle and a serial bus system.

5. The bus system as recited in claim 1 , wherein the second identifiers are included either (i) in the payloads or (ii) in a predefined number of low-priority bits of headers of the messages of the dynamic communication.

6. The bus system as recited in claim 1 , wherein the bus system is a CAN or a CAN FD bus system, and the device for the dynamic communication is developed to use at least one previously reserved identifier of the CAN or the CAN FD bus system as the second identifier, each one of the previously reserved identifiers is allocated to maximally one subscriber station for the transmission of a message, and all subscriber stations are developed to receive the previously reserved identifiers.

7. The bus system as recited in claim 1 , wherein the bus system is a FlexRay bus system, and the device for the dynamic communication is developed to use at least one previously reserved time window of the FlexRay bus system, and each one of the previously reserved time windows is allocated to maximally one subscriber station for the transmission of a message, and all subscriber stations are developed to receive content of the previously reserved time windows.

8. The bus system as recited in claim 1 , wherein all of the plurality of subscriber stations are configured to communicate with each other using a CAN-FD protocol.

9. The bus system as recited in claim 1 , wherein:
the one of the others of the plurality of subscriber stations and the another of the others of the plurality of subscriber stations were deployed into the bus system during an initial bus system deployment stage;
the new station was deployed after the initial bus system deployment stage;
for each of the plurality of subscriber stations that is deployed into the bus system after the initial bus system deployment stage, all messages from the respective subscriber station that are transmitted onto the communications link of the bus system to one or more other ones of the plurality subscriber stations each includes the first identifier and the second identifier; and
all of the plurality of subscriber stations that were deployed into the bus system during the initial bus system deployment stage are configured to transmit all of their respective messages onto the communications link of the bus system without inclusion of the information type identifier.

10. The bus system as recited in claim 1 , wherein:
the one of the others of the plurality of subscriber stations and the another of the others of the plurality of subscriber stations were deployed into the bus system during an initial bus system deployment stage;
the new station was deployed after the initial bus system deployment stage;
for each of the plurality of subscriber stations that is deployed into the bus system after the initial bus system deployment stage, at least a first time that the respective subscriber station transmits a message onto the communications link of the bus system to one or more other ones of the plurality subscriber stations, the message that is transmitted includes the first identifier and the second identifier; and
all of the plurality of subscriber stations that were deployed into the bus system during the initial bus system deployment stage are configured to transmit all of their respective messages onto the communications link of the bus system without inclusion of the information type identifier.

11. The bus system as recited in claim 1 , wherein:
the one of the others of the plurality of subscriber stations and the another of the others of the plurality of subscriber stations were deployed into the bus system during an initial bus system deployment stage;
the new station was deployed after the initial bus system deployment stage;
for each of the plurality of subscriber stations that is deployed into the bus system after the initial bus system deployment stage, at least a first time that the respective subscriber station transmits a message onto the communications link of the bus system to one or more other ones of the plurality subscriber stations, the message that is transmitted includes the first identifier and the second identifier.

12. The bus system as recited in claim 1 , wherein:
the one of the others of the plurality of subscriber stations and the another of the others of the plurality of subscriber stations were deployed into the bus system during an initial bus system deployment stage;
the new station was deployed after the initial bus system deployment stage; and
all of the plurality of subscriber stations that were deployed into the bus system during the initial bus system deployment stage are configured to transmit all of their respective messages onto the communications link of the bus system without inclusion of the information type identifier.

13. A subscriber station for deployment into a bus system as a new station of a plurality of subscriber stations after others of the plurality of subscriber stations were deployed into, and communicated over, a communications link of the bus system, wherein (a) one of the others of the plurality of

Assignees

• Bosch Gmbh Robert

Inventors

• Haenger Jochen Ulrich
• Schweizer Markus
• Amarnath Rakshith
• Szerwinski Robert
• Heinz Thomas

Classifications

• H04L2012/40241

  Flexray · CPC title

• H04L12/40169 Primary

  Flexible bus arrangements (arrangements for maintenance or administration involving management of faults; events, alarms H04L41/06; automatic restoration of network faults H04L41/0654) · CPC title

• H04L2012/40215

  Controller Area Network CAN · CPC title

• H04L2012/40273

  the transportation system being a vehicle · CPC title