uRLLC中PDCP数据复制传输及增强研究  

Research on PDCP Data Duplication Transmission and Enhancement in URLLC

作　　者：邵延峰 SHAO Yanfeng(The 50th Research Institute of China Electronics Technology Group Corporation,Shanghai 200331,China;CETC Advanced Mobile Communication Innovation Center,Shanghai 200331,China)

机构地区：[1]中国电子科技集团公司第五十研究所,上海200331 [2]中国电科新一代移动通信创新中心,上海200331

出　　处：《移动通信》2021年第3期44-47,共4页Mobile Communications

摘　　要：uRLLC作为5G三大典型应用场景之一,对时延和可靠性有着极高的要求,其中,对PDCP层数据进行数据复制传输及增强可以保证低时延的同时提高数据传输可靠性。在分析5G空口协议架构和PDCP功能的基础上,对载波聚合和双连接场景下的数据复制传输进行了研究,包括R16版本的数据复制传输增强。在实际应用中PDCP数据复制传输可适情动态启用/关闭,以在传输可靠性和无线资源损耗上取得平衡。As one of the three typical application scenarios of 5G,uRLLC has extremely high requirement for latency and reliability.The data duplication transmission and enhancement on the PDCP layer can ensure low latency while improving the reliability of data transmission.Based on the analysis of the protocol architecture of 5G air interface and the function of PDCP,this paper investigates the data duplication transmission in the scenario with carrier aggregation and dual connection,including the data duplication transmission and enhancement in R16 version.In realistic applications,PDCP data duplication transmission can be dynamically enabled/disabled to achieve a balance between transmission reliability and wireless resource consumption.

关 键 词：uRLLC PDCP 复制传输 

分 类 号：TN929.5[电子电信—通信与信息系统]