MOBILE COMMUNICATION SYSTEM AND METHOD FOR TRANSMITTING PDCP STATUS REPORT THEREOF

摘要

A mobile communication system, and method for transmitting a PDCP status report thereof capable of preventing the occurrence of data loss when re-establishing an RLC. When an RLC re-establishment occurs due to an RLC internal error, a receiving PDCP entity triggers a status report to transmit it to a transmitting PDCP entity even if PDCP entities are not replaced by others. The transmitting PDCP entity checks whether a received state of each PDCP SDU based on the triggered PDCP status report, and then re-transmits PDCP SDUs having not successfully received by the receiving PDCP entity.