Method and apparatus for transmitting data packets and method and apparatus for receiving data packets

摘要

The invention relates to a data packet structure for conveying data of service data units (SDU) using protocol data units (PDU). The data packet comprise a data packet payload comprising at least one protocol data unit (PDU), wherein a protocol data unit (PDU) comprises a service data unit (SDU) or a fragment of a service data unit; and a data packet header comprising an indicator (FFF,SFF) indicating whether or not the data packet payload begins with a protocol data unit (PDU) being a fragment of a service data unit and whether or not the data packet payload ends with a protocol data unit (PDU) being a fragment of a service data unit.

主权项

1. A method for transmitting data packets, the method comprising the steps of:
mapping one of (i) a plurality of full service data units, (ii) a plurality of segments of service data units, or (iii) at least one full service data unit and at least one segment of a service data unit to a data packet payload; mapping a single indicator including a first bit and a second bit to a data packet header, wherein a number of bits included in the indicator is two regardless of a number of service data units included in the data packet payload; mapping the data packet header and the data packet payload to a data packet; and transmitting the data packet by a transmitter, wherein: the first bit and the second bit of the indicator indicate only (i) whether or not the data packet payload begins with a segment of a service data unit, and (ii) whether or not the data packet payload ends with a segment of a service data unit.