PACKET DATA CONVERGENCE PROTOCOL (PDCP) ENTITY AND METHOD PERFORMED BY THE SAME

摘要

The present disclosure provides a method performed by a Packet Data Convergence Protocol (PDCP) entity and the PDCP entity. The method comprises: mapping one or more PDCP Protocol Data Units (PDUs) received out-of-order from a lower layer entity of the PDCP entity to one or more PDCP Service Data Units (SDUs) and storing the PDCP SDUs in a reordering buffer; determining whether sequence numbers of one or more missing PDCP SDUs are smaller than the smaller one of the two maximum sequence numbers among PDCP SDUs received by the PDCP entity from two lower layer entities, respectively; and delivering one or more PDCP SDUs having sequence numbers smaller than the sequence numbers of the missing PDCP SDUs and one or more PDCP SDUs having sequence numbers larger than and consecutive with the sequence numbers of the missing PDCP SDUs, as stored in the reordering buffer, to a higher layer entity of the PDCP entity when the sequence numbers of the missing PDCP SDUs are smaller than the smaller of the maximum sequence numbers.

主权项

1. A method performed by a Packet Data Convergence Protocol (PDCP) entity, comprising:
mapping one or more PDCP Protocol Data Units (PDUs) received from lower layer entities of the PDCP entity to one or more PDCP Service Data Units (SDUs) and storing the PDCP SDUs in a reordering buffer; determining whether sequence numbers of one or more missing PDCP SDUs are smaller than the smaller one of the two maximum sequence numbers among PDCP SDUs received by the PDCP entity from two lower layer entities, respectively; and delivering one or more PDCP SDUs having sequence numbers smaller than the sequence numbers of the missing PDCP SDUs and one or more PDCP SDUs having sequence numbers larger than and consecutive with the sequence numbers of the missing PDCP SDUs, as stored in the reordering buffer, to a higher layer entity of the PDCP entity when the sequence numbers of the missing PDCP SDUs are smaller than the smaller of the maximum sequence numbers.