Transmission of data packets e.g. for charging for services in UMTS network, by transmitting confirmation message from receiver to transmitter to indicate reception of packet

摘要

The method involves transmitting a data packet from a transmitter (S) to a receiver (E), and transmitting a confirmation message to indicate reception of the packet, from the receiver to the transmitter. When transmitting the data packet, a timer is started to check for the reception of the confirmation message. No more data packets are transmitted if there are no conformation messages received within a time window started by the timer. Independent claims are included for a terminal and for a data packet transmission system.