扩展资源预留协议的波长选择设计方案分析  

An extended RSVP protocol of wavelength assignment scheme

作　　者：王力[1] 王燕[2] 张民[1] 袁梦[1] 

机构地区：[1]北京邮电大学,北京100876 [2]集宁师范学院,乌兰察布012000

出　　处：《光通信技术》2012年第3期4-6,共3页Optical Communication Technology

基　　金：国家863项目(2009AA01Z255)资助

摘　　要：主要研究基于路径计算单元(PCE)的波长交换光网络(WSON)中的波长分配问题。提出了PAWA(PCF Assistant Wavelength Assignment)方案,在可能发生冲突的path请求上做标记,来帮助目的节点选择波长,从而避免资源冲突。最后利用离散事件模拟工具OMNeT++进行了仿真分析,相比首次命中(FF)和随机命中(RF),PAWA方案扩展了信令,降低了阻塞率,并没有增加建路延时和资源利用率。For the routing with distributed Wavelength Assignment（WA） architecture.In order to reduce resource conflicts caused by concurrent requests,a PAWA scheme has been proposed in this paper,we mark the path message that resource conflicts may occur,so that the destination node can choose wavelength to some extent to avoid conflicts.Finally,using the discrete event simulation tool OMNeT＋＋,compared with traditional solutions First Fit（FF） and Random Fit（RF）,PAWA scheme expand the protocol can reduce the blocking probabilities while almost not increase delay.

关 键 词：光网络 路径计算单元 路由和波长分配 分布式波长分配 后向资源预留 

分 类 号：TN914[电子电信—通信与信息系统]