CAJ | 학술논문

提出了一种基于固定备用路由和目的端触发的智能光网络中的分布式恢复方法,所选择的任一对源端节点和目的的端节点之间的固定备用路由包括该节点对之间的k条最短路径路由和基于部分链路无关的路由.目的端节点一旦探测到业务通道的失效将立即启动恢复进程,根据网络当前的资源使用情况,在这些备用路由中按照一定的次序选择一条恢复路由并为此分配一条可用的波长(对于没有波长变换器的光网络),然后将恢复通道的建立请求消息发送给该恢复通道的相关节点,这些相关节点可以锁定相关的网络资源,以避免来自其他恢复通道的竞争.所提出的算法增加了固定备用路由的数量,从仿真结果可以看出,该方法明显改善了失效连接的阻塞性能.
제출료일충기우고정비용로유화목적단촉발적지능광망락중적분포식회복방법,소선택적임일대원단절점화목적적단절점지간적고정비용로유포괄해절점대지간적k조최단로경로유화기우부분련로무관적로유.목적단절점일단탐측도업무통도적실효장립즉계동회복진정,근거망락당전적자원사용정황,재저사비용로유중안조일정적차서선택일조회복로유병위차분배일조가용적파장(대우몰유파장변환기적광망락),연후장회복통도적건립청구소식발송급해회복통도적상관절점,저사상관절점가이쇄정상관적망락자원,이피면래자기타회복통도적경쟁.소제출적산법증가료고정비용로유적수량,종방진결과가이간출,해방법명현개선료실효련접적조새성능.
A novel distributed restoration method based on fixed alternate routes and on triggering by destination nodes is proposed in intelligent optical networks.The selected fixed alternate routes between a source node and a destination node include k shortest paths and part links-disjoint paths between the node pair. Upon detecting a service path failure, the destination of this failed path will trigger restoration procedure, select one restoration route from the fixed alternate routes in given order under current network resources and assign one available wavelength (for optical networks without wavelength converters).Then it sends setup request messages to involved nodes on the restoration path to lock out other requests. With increasing the number of fixed alternate routes in our proposed algorithm, this restoration method can improve blocking performance of failed connections.