卫星链路上的SR协议性能分析

摘要

选择重传ARQ协议兼顾了停等ARQ协议可靠性高、退后N ARQ协议传输能力强、应用广泛的优势.传统的选择重传ARQ协议模型没有考虑窗口大小对协议性能的影响,导致选择重传ARQ协议模型分析能力不足.为此,通过对选择重传ARQ协议的运行进行分析,建立了与选择重传ARQ协议运行一致的数学模型,并通过仿真验证了所建模型的合理性.%ARQ protocol is importanrt in reliable transmit of data-link. In classic ARQ,the GBN protocol get hold of broad application beacause of better transmit and simple implement,and especially is suit to weak client under running capability.The math mode on GBN protocol is found to be indigent about ananysis of existing mode on the GBN protocol. Simulation result confirm that the mode is sound.