Modification of identifier data to identify intermediate devices

摘要

A method provides data communication to a vehicle. The method comprises a first data packet from a device associated with said vehicle at an intermediate device, said first data packet comprising a first identifier identifying said vehicle, modifying said first identifier to identify said intermediate device and forwarding said modified first data packet from said intermediate device to a further device. A communications session between said device associated with said further device is established, and a session identifier is associated with the communications session, and said first data packet comprises said session identifier and said modified data packet comprises said session identifier.

主权项

1. A method of providing data communication to a vehicle, the method comprising:
at a device associated with the vehicle: establishing a communications session between the device associated with the vehicle and a further device, the communications session having an associated session identifier identifying the device associated with the vehicle; at a first intermediate device not aboard the vehicle: receiving a first data packet from the device associated with said vehicle, said first data packet comprising a first identifier identifying said device associated with the vehicle; modifying said first identifier to identify said first intermediate device; forwarding said modified first data packet from a first intermediate device to the further device; at a second intermediate device not aboard the vehicle: receiving a second data packet from the device associated with the vehicle, the second data packet comprising a second identifier identifying the device associated with the vehicle; modifying the second identifier to identify the second intermediate device; forwarding the modified second data packet from the second intermediate device to the further device; wherein said first data packet and said second data packet comprise said session identifier and said modified first data packet and said modified second data packet comprise said session identifier.