Patent ID: 8644221

Claim:
A method for operating a mobile communication network, in which user data are transmitted between a mobile station and a first base station, the method comprising combining the user data into data units before transmitting them; and storing, for the transmission of the data units, transmission specific information corresponding to transmission specific information which is stored in the mobile station, in a first network unit, the first network unit having a protocol level higher than a protocol level of the first base station, the transmission specific information describing an actual status of the transmission; wherein in the event of a hand-over of a connection to the mobile station from the first base station to a second base station associated with a second network unit having a protocol level higher than a protocol level of the second base station, signaling information establishes whether a transmission protocol created in the second network unit is to be reset to a starting state or whether the existing, already built-up transmission specific information is to be transferred from the first network unit to the second network unit such that the transmission of the data units may be continued after the handing over essentially directly from the state as it existed immediately before the handing over.