Patent ID: 8743905
Filing Date: 2014-06-03
Classification: H04L,H04W

Abstract:
1. A method of transmitting data, comprising: receiving, at an apparatus, a plurality of service data units (SDUs) from an upper layer, the plurality of SDUs being Packet Data Convergence Protocol (PDCP) SDUs; bundling, by a processor of the apparatus, the plurality of SDUs; ciphering the plurality of SDUs, the ciphering comprising: partitioning the plurality of SDUs into segments, each segment including at least two SDUs, generating a count value for each segment based on a sequence number and a hyper-frame number (HFN) of a designated SDU in the segment, the designated SDU being a predetermined SDU in the at least two SDUs of the segment and being identified using the HFN, and ciphering the at least two SDUs in each segment based on the count value for the respective segment; generating a header comprising at least one sequence number of at least one SDU among the plurality of SDUs, and, for each SDU except for a last SDU among the plurality of SDUs, including an extension field and a length field in the header, wherein the extension field for each SDU indicates whether length information for another SDU will follow in the header, and wherein the length field for each SDU includes length information for the SDU; forming a single protocol data unit (PDU) comprising the header and the plurality of bundled SDUs, the PDU being a PDCP PDU; and passing, by the processor, the PDU to a lower layer.