摘要
为了有效分配WSON光网络中的波长资源,提出了一种基于路径计算单元(Path Computation Element,PCE)的波长交换光网络(Wavel ength-Switched Optical Network,WSON)路由与波长分配策略。该策略通过PCE建立波长资源冲突避免表,并由目的节点与PCE进行通信确认,避免资源竞争问题的发生。将该策略下的网络阻塞情况与FF算法、RF算法进行对比仿真,仿真结果表明运用该策略可以有效抑制波长预留冲突,大大降低网络阻塞率。
In order to effectively assign wavelength resource in WSON optical network, a routing and wave- length assignment strategy in WSON optical network based on PCE is put forward. The strategy establishes wavelength resource collision avoidance table by PCE, and destination nodes communicate with PCE to notarize the table, which can avoid the occurrence of resource competition problem. Finally, the network blocking probability of the strategy is contrasted with FF algorithm and RF algorithm by simulation. The results of simulation demonstrate that utilizing the strategy can effectively restrain the wavelength reservation collision, and greatly reduce the network blocking probability.
出处
《光通信技术》
CSCD
北大核心
2012年第11期22-24,共3页
Optical Communication Technology
基金
四川省教育厅青年基金项目(编号:11ZB118)资助
关键词
波长交换光网络
路由与波长分配
资源预留
网络阻塞率
wavelength-switched optical network （WSON）
routing and wavelength assignment （RWA）
resource reservation
network blocking probability
