摘要
在对长期演进(long term evolution,LTE)下行数据发送机制详细分析的基础上,针对下行数据发送过程的实现,提出一种混合自动重传请求(hybrid automatic repeat request,HARQ)选择方案,遵照协议给出的反馈时延的时隙关系,在设计中采用反馈判断和优先重传的方案,实现了HARQ反馈和重传时刻的正确映射,并研究了同步HARQ和异步HARQ的往返时间(round trip time,RTT),仿真分析了不同上下行配置对HARQRTT的影响,提出了一种最小化RTT的方法 ,从而为网络侧提供业务不同时的配置选择提供了参考。
Based on a detailed research on the mechanism of downlink data transmission in LTE system, an error- free HARQ solution to realize the downlink data transmission process was provided. According to the relations of the feedback delay, associated decision of feedback judgment and retransmission priority were adopted to complete the correspondence between them. A research on RTY of synchronous and asynchronous HARQ and the influence of different UL-I）L configurations on HARQ RTY were also studied. Then a method to minimize RTI？ was put forward to provide reference for eNode B to choice configurations when providing different communication services.
出处
《电信科学》
北大核心
2013年第4期74-77,82,共5页
Telecommunications Science
基金
国家科技重大专项基金资助项目(No.2011ZX03001-002)
