US 12,273,259 B2
Method for operating a communication system, and communication system
Waldemar Harsch, Hannover (DE)
Assigned to Siemens Mobility GmbH, Munich (DE)
Appl. No. 16/964,290
Filed by SIEMENS MOBILITY GMBH, Munich (DE)
PCT Filed Dec. 27, 2018, PCT No. PCT/EP2018/097015
§ 371(c)(1), (2) Date Jul. 23, 2020,
PCT Pub. No. WO2019/145109, PCT Pub. Date Aug. 1, 2019.
Claims priority of application No. 10 2018 201 011.0 (DE), filed on Jan. 23, 2018.
Prior Publication US 2021/0014149 A1, Jan. 14, 2021
Int. Cl. H04L 45/02 (2022.01)
CPC H04L 45/026 (2013.01) 17 Claims
OG exemplary drawing
 
1. A method of operating a communication system having a first communication unit and at least one second communication unit, the method comprising:
using logic communication connections for performing a first task of a data transmission between the first communication unit and the at least one second communication unit; and
providing a further logic communication connection between the first communication unit and the at least one second communication unit, the further logic communication connection performing a second task of transmitting at least one joint keep-alive message via the further logic communication connection, the joint keep-alive message including at least one respective item of information for each logic communication connection of a plurality of the logic communication connections used for the data transmission;
wherein the further logic communication connection is not one of the logic communication connections;
wherein the further logic communication connection has a function that is different from functions of the logic communication connections for data transmission between the first communication unit and the at least one second communication unit, and
wherein the further logic communication connection is separate from the logic communication connections for data transmission between the first communication unit and the at least one second communication unit, and wherein the at least one joint keep-alive message is one of a plurality of joint keep-alive messages and the further logic communication connection is reserved for repeatedly transmitting one of the plurality of joint keep-alive messages,
wherein each joint keep-alive message, with regard to the plurality of logic communication connections used for the data transmission, includes, in each case as the at least one item of information, a sequence number of a data transmission last performed via the respective logic communication connection, and
wherein a check is performed with regard to the respective logic communication connection, whether or not all of the preceding data transmissions or messages were received.