摘要
针对LTE系统的高数据速率和海量信息容量的特点,对分组数据汇聚协议(PDCP)在功能上进行了改进。对压缩算法进行了简化,支持完整性保护和加密(UMTS的加密在RLC的非TM模式和MAC的TM模式下实现)功能,分析了新的上下行数据传输方式以及在切换时的PDU重排序,最后设计了在OPNET中PDCP的具体实现方式。
According to the high data rate and the mass information capacity of LTE system, the function of packet data convergence protocol （PDCP） were improved： simplify the compression algorithm, support the integrity protection and encryption （cipher of UMTS in the non-TM mode of RLC and the TM mode of MAC） functions. The new uplink and downlink data transmission mode, as well as reordering of PDU at handover are analyzed. The specific implementation method of PDCP in OPNET was designed.
出处
《现代电子技术》
2011年第7期44-48,共5页
Modern Electronics Technique
基金
国际科技合作项目(S2010GR0902)资助
