Patent ID: 7839894
Filing Date: 2010-11-23
Classification: H04B,H04L,H04W

Abstract:
1. A transmitting device for use in a radio communication system, the transmitting device having a radio link control (RLC) layer comprising an unacknowledged mode (UM) RLC entity, the UM RLC entity comprising: a transmission buffer that stores RLC service data units (SDUs) received from an upper layer through an unacknowledged mode-service access point (UM-SAP); a segmentation and concatenation module that at least segments or concatenates the stored RLC SDUs to form at least one RLC protocol data unit (PDU); a header adding module that adds at least one header to the at least one RLC PDU, each of the at least one header comprising a sequence number (SN) of each of the at least one RLC PDU; and a ciphering module that ciphers the at least one RLC PDU output from the header adding module and transmits the ciphered at least one RLC PDU to a lower layer through at least one of a plurality of channels for transmission, wherein the ciphering is performed as a final data processing step in the UM RLC entity.