Method For Transmitting Data In A Packet-Oriented Communications Network And Correspondingly Configured User Terminal In Said Communications Network

• US 20150156134A1
• Filed: 05/07/2013
• Published: 06/04/2015
• Est. Priority Date: 05/11/2012
• Status: Active Grant

• Current Assignee: Continental Automotive GmbH (Continental AG)
• Original Assignee: Continental Automotive GmbH (Continental AG)
• Inventors: Nbauer, Josef, Zinner, Helge
• Granted Patent: US 9,942,165 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 47/722 at the destination endpoint, e.g. reservation of terminal resources or buffer space
• CPC Class Codes: H04L 47/724 at intermediate nodes, e.g. resource reservation protocol [RSVP]
• CPC Class Codes: H04L 47/803 Application aware
• CPC Class Codes: H04L 47/805 QOS or priority aware
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks

Abstract

A method for transmitting data in a packet-oriented communications network, in particular of a motor vehicle and to a user terminal configured for carrying out the method. In the method, data packets are transmitted without a guaranteed transmission time for the data packets and with a guaranteed maximum transmission time for the data packets in said communications network. For a data transmission with a guaranteed transmission time, a specific quality of service is reserved prior to the data transmission by reservation request from the sender of the data to the receiver of the data and the data transmission with a guaranteed transmission time is only started once a confirmation of the reservation request sent by the sender has been received. In addition, selected data that is to be transmitted in a guaranteed transmission time is sent directly as a data stream of data packets and a reservation request is sent after the start of the data stream.

Claims

1-11. -11. (canceled)

12. A method for transmitting data in a packet-oriented communications network, in which first data packets are transmitted without a guaranteed transmission time and with a guaranteed maximum transmission time for second data packets, comprising:

reserving a certain quality of service for data transmission with a guaranteed transmission time, prior to the data transmission using a reservation request from a sender of the data to a recipient of the data;

transmitting the data transmission having a guaranteed transmission time only after receipt of a confirmation of the reservation request emitted by the sender;

immediately emitting selected data intended to be transmitted in a guaranteed transmission time as a data stream of second data packets; and

forwarding a reservation request after a start of the data stream of second data packets.

13. The method as claimed in claim 12, wherein the data stream is relabeled with a guaranteed transmission time for the second data packets after receiving a confirmation of the forwarded reservation request.

14. The method as claimed in claim 13, wherein the first and second data packets in the data stream along a communication connection are relabeled in switches in which the first and second data packets are received and emitted again.

15. The method as claimed in claim 12, wherein the data stream is initially declared to be a transmission of data without a guaranteed transmission time for the first data packets.

16. The method as claimed in claim 12, wherein a transport protocol is configured to transmit data with a guaranteed transmission time for the second data packets for the data stream, a setting of flags in a header of the first data packets in the data stream being used to determine that they are not data in need of reservation.

17. The method as claimed in claim 16, wherein the data stream of the selected data is identified, within a scope of an Ethernet AVB standard, by defining one of a special VLAN ID and a multicast sender address.

18. The method as claimed in claim 16, wherein the first data packets with a set flag in the header are handled with high priority by switches.

19. The method as claimed in claim 12, wherein the communications network is statically preconfigured.

20. The method as claimed in claim 12, wherein, when starting up the communications network, unplanned data traffic is not transmitted until the communications network has been configured.

23. The method as claimed in claim 12, wherein the packet-oriented communications network is a network for a motor vehicle.

24. The method as claimed in claim 12, wherein the network comprises at least one of the sender, the recipient and a switch.

21. A subscriber device in a communications network, comprising:

a transmitting/receiving device; and

a computing unit, the computing unit configured to carry out communication in the communications network according to a communication protocol, wherein the computing unit is configured to execute program code to;

reserve a certain quality of service for data transmission with a guaranteed transmission time, prior to the data transmission using a reservation request from a sender of the data to a recipient of the data;

transmit the data transmission having a guaranteed transmission time only after receipt of a confirmation of the reservation request emitted by the sender;

immediately emit selected data intended to be transmitted in a guaranteed transmission time as a data stream of second data packets; and

forward a reservation request after a start of the data stream of second data packets.

22. A computer program product having program code stored on a non-transient medium which, when executed on a computing unit, is configured to:

reserve a certain quality of service for data transmission with a guaranteed transmission time, prior to the data transmission using a reservation request from a sender of the data to a recipient of the data;

transmit the data transmission having a guaranteed transmission time only after receipt of a confirmation of the reservation request emitted by the sender;

immediately emit selected data intended to be transmitted in a guaranteed transmission time as a data stream of second data packets; and

forward a reservation request after a start of the data stream of second data packets.