基于业务优先级的EON频谱分配方案

摘要

In the matter of routing and spectrum assignment (RSA) in EON,continuity and consistency constrains should be met by resource allocating and optimizing methods,without satisfying those constrains,spectrum fragments will appear,aiming on this problem,in this paper,an improved spectrum assignment scheme for EON based on the service priority is proposed.This scheme firstly sorts arrived services according to their priorities.Secondly,corresponding spectrum resource will be allocated to them.Finally,simulation describes the change of spectrum fragmentation degree of the network and proves the effectiveness.%从弹性光网络中的路由和频谱分配入手,针对资源分配和优化需要满足的一致性和连续性约束及在未满足约束条件下的频谱碎片化问题,提出了一种基于业务优先级的弹性光网络改进频谱分配方案,对到达的业务按一定的优先级排序后再进行频谱分配.最后,通过仿真描述了网络碎片化程度的变化,验证了方案的有效性.