Data transmission protocol

摘要

A method of transmitting data from a transmitter towards a receiver, comprising the steps of: forming a plurality of ordered data units each comprising a part of a data message; transmitting at least some of the data units in order, identifying a discard status in respect of the data message; and if a subset of the data units including the final one of the data units and at least one other of the data units has not been transmitted: indicating that the data message is to be discarded and specifying the identity of the final one of the data units; and transmitting only the final one of the data units from the said subset.