一种基于5G HARQ的改进型HARQ方法研究  

Research on an improved HARQ method based on 5g HARQ

作　　者：费振华[1] 滕国宝 FEI Zhenhua;TENG Guobao(Gansu Province Computing Center,Gansu Province,Lanzhou City 730030)

机构地区：[1]甘肃省计算中心,甘肃兰州730030

出　　处：《长江信息通信》2023年第2期210-212,共3页Changjiang Information & Communications

摘　　要：3GPP标准5G-NR中的ARQ纠错技术包含RLC层的选择重发式(SR_ARQ)技术、MAC层的停等式ARQ(SW_ARQ)技术和物理层的软合并技术,5G的ARQ纠错技术因其处理复杂、对处理器平台要求高,很难直接运用到移动分布式网络中,如MESH网络和ADHOC网络,文章针对这种移动分布式网络提出了一种改进型混合ARQ(SR_HARQ)纠错技术,该技术直接省去了5G中MAC层的SW_ARQ技术,将SR_ARQ技术和基于前向纠错的软合并技术直接结合使用,通过将空口时隙和接收端缓冲区绑定分配的策略,实现物理层的软比特合并,极大简化了协议的复杂度,效率高、可实现性强,非常适用于轻量处理器平台及移动分布式网络。the ARQ error correction technology in the 3GPP standard 5g-nr includes the Selective Retransmission ARQ(SR_ARQ)technology of the RLC layer,Stop and Wait ARQ(SW_ARQ)technology of MAC layer and soft combination technology of physical layer,5g ARQ error correction technology is difficult to be directly applied to mobile distributed networks,such as mesh network and AdHoc network,because of its complex processing and high requirements for processor platform.This paper proposes an improved SR_HARQ error correction technology for this mobile distributed network,which directly eliminates the SW_ARQ technology of MAC layer in 5g-NR,SR_ARQ technology and soft combining technology based on forward error correction are directly combined.Through the strategy of binding and allocating the air interface time slot and the buffer at the receiving end,the soft bit combination of the physical layer is realized,which greatly simplifies the complexity of the protocol,has high efficiency and strong realizability,and is very suitable for light-weight processor platforms and mobile distributed networks.

关 键 词：SR_HARQ SW_ARQ 分布式网络 TDMA MESH ADHOC网络 

分 类 号：TN929.5[电子电信—通信与信息系统]