OPERATION OF CONTROL PROTOCOL DATA UNITS IN PACKET DATA CONVERGENCE PROTOCOL Russian patent published in 2011 - IPC G06F21/20 H04W12/04 

FIELD: information technology.

SUBSTANCE: method is realised by defining a (packet data control protocol) PDCP-STATUS message using a control packet data unit (PDU); selective indication of the status of service data units (SDU) PDCP for the maximum number of serial packets in accordance with the initial index number and bitmap in which each bit is the next index number which is the status of the SDU PCDP, and sending the PDCP-STATUS message to a wireless communication peer entity.

EFFECT: reliable messages on status and repeated setup of PDCP through receipting, and by applying PDU control encryption.

15 cl, 9 dwg