In a mobile electronic communication device for receiving a downlink radio link control (RLC) data block, the improvement comprising determining whether an Extension (E) bit within a header of the data block has been reset to zero, thereby denoting the existence of extension octets within the data block,...http://www.google.de/patents/US7639645?utm_source=gb-gplus-sharePatent US7639645 - Method for receiving and managing a downlink radio link control data block in an EGPRS mobile electronic communication device