一种有限缓存下的高级在轨多路复用等时帧生成模型  

Generative Model with Isochronous under Finite Buffer Based on Advanced Orbit Systems Multiplexing

作　　者：赵运弢[1,2] 潘成胜[3] 田野 毕明雪[2] 

机构地区：[1]南京理工大学自动化学院,江苏南京210094 [2]沈阳理工大学通信与网络工程中心,辽宁沈阳110168 [3]大连大学,辽宁大连116000

出　　处：《信息与控制》2010年第6期738-742,共5页Information and Control

基　　金：辽宁省高校创新团队资助项目(2007T153)

摘　　要：在高级在轨系统的成帧过程中,缓存容量和复用效率直接影响VCA子层和整个系统的吞吐性能.不同于之前的无限缓存长等待时间模型,本文基于泊松分布,建立了MPDU复用的统计概率模型,提出一种基于有限缓存的等时帧生成模型,并推导出了表征缓存容量、成帧等待时间和效率关系的递推公式.将理论公式递推数据与仿真数据进行比较,仿真结果表明递推公式能较好地刻画真实的成帧过程.In the frame-forming process of advanced orbit system,the buffer capability and multiplexing efficiency directly affect the performance of the virtual channel access（VCA） sublayer and whole system.Different from the model of infinite buffer with long waiting-time,a statistics probability model of multiplexing protocol data unit（MPDU） is established based on Poisson distribution.A frame-forming model of equal-time based on the finite buffer is proposed,and the recursive formula about buffer capability,forming waiting-time and efficiency is given.Also the data from theoretical formula is compared with simulation data.The simulation results show that the recursive formula validate the real forming process very well.

关 键 词：空间数据系统咨询委员会 高级在轨系统 虚拟信道访问 多路复用数据单元 

分 类 号：TN919[电子电信—通信与信息系统]