FIELD: mobile communications; transmitting and receiving the protocol data unit (PDU).
SUBSTANCE: applied method is used for transmitting a PDU, which includes the Extended Address bit and the Length Indicator (LI) field, in the user equipment (UE) or the node B. A PDU is formed by two service data units (SDU) and a header which has data concerning both SDUs in the transmitting device. The method includes forming a LI field in the header, which will show the end point of every SDU except the final SDU, and the Extended Address bit showing the presence or absence of a LI field after every LI field, forming the header in such a way so the Extended Address bit will be positioned before every LI field, forming a PDU with complete header and SDU; and transmitting the PDU.
EFFECT: improved LI verification on the receiving side.
14 cl, 9 dwg, 2 tbl
