Patent ID: 8677019

Claim:
A method for data communication between a first communication user situated in a motor vehicle and a second communication user situated outside the motor vehicle, the first communication user being addressable by the second communication user via a network address, the method comprising the acts of: receiving, by an address management unit from the first communication user, a network address request message containing an unambiguous vehicle identification of the motor vehicle; defining, in response to receiving the network address request message containing the unambiguous vehicle identification, the network address of the first communication user by the address management unit situated outside the motor vehicle, wherein the network address is defined, based at least in part, on the unambiguous vehicle identification of the motor vehicle; transmitting the defined network address of the first communication user to the first communication user; and converting, by a vehicle access application at the first communication user situated in the motor vehicle, an input data stream transmitted from the second communication user into a diagnostic data stream having a data format of a conventional diagnostic communication, wherein assignment data for an assignment between the unambiguous vehicle identification received and the subsequently defined network address are stored at the address management unit, from which the network address pertaining to a vehicle identification can be queried by other communication users, and wherein communication between the first and the second communication user takes place by way of an Ethernet interface and a TCP/IP standard protocol.