摘要
针对CCSDS数据包随机到达和包长可变的特点,建立了CCSDS发送端包复用处理系统的性能模型及处理界限;在设定包到达服从泊松过程的基础上,分析了缓存和处理速度与包长的关系,得出了包复用处理系统的溢出门限;通过仿真验证了包到达率和包长对处理系统处理能力的影响及对缓存容量的需求,从而为CCSDS发送端数据处理系统的设计提供了理论依据。
For the characteristics of CCSDS,which are packet random arrival and variable packet length,the paper established the performance model and processing limit of multiplexing processing system that sends CCSDS packets.On the basis of packet arrival obeying Poisson process,the relationship of cache capacity and processing speed with packet length was analyzed.Then overflow threshold of packet multiplexing processing system was educed.Simulation results show the impact of packet arrival rate and packet length on processing ability and the required cache capacity,which provides a theoretical basis for design of CCSDS sender data processing system.
出处
《计算机科学》
CSCD
北大核心
2010年第10期92-94,共3页
Computer Science
基金
863国家重点基金项目(2008AAXX)资助
关键词
包复用
包到达率
包长
缓存容量
Packet multiplexing
Packet arrival rate
Packet length
Cache capacity
