摘要
提出适于智能配用电通信的无源光网络架构。基于异步光分组交换及波分复用技术,构建树形及环形拓扑结构,可提高系统可扩展性及对实时突发业务的随机接入能力。基于空分光交换矩阵和光纤延时线,实现上行信号的冲突解决,可减小分组等待时延,提高冲突解决机制的灵活性。基于自相似流量分布分析了系统波长冲突的丢包率PLR及分组等待时延T。结果表明,PLR随流量负载ρ的增大而增大,随FDL个数B及Pareto分布参数α的增大而减小。
A novel passive optical network based on asynchronous optical-packet-switching and wavelength division multi- plexing technologies is presented for applications of the smart distribution network communication system. Tree and ring topologies are proposed to improve the system scalability and random access ability for real-time burst services. Con- tention resolution mechanism based on optical switching matrix and fiber delay lines （FDL） is presented for upstream sig- nal collisions, which can reduce the packet waiting latency and increase the flexibility for contention resolution. Packet loss rates （PLR） and packet waiting latencies （T） for wavelength contentions of the system are analyzed based on self- similar traffic model. The simulation shows that PLR increases with the traffic load （ρ） while is inversely proportional to the FDL number （B） and the Pareto distribution parameter （α）.
出处
《电力系统通信》
2011年第10期68-72,共5页
Telecommunications for Electric Power System
关键词
智能配用电通信技术
无源光网络
光分组交换
波分复用
冲突解决
smart distribution network communication technology
optical packet switching
wavelength division multiplexing
contention resolution
