重庆邮电大学学报（自然科学版）2026，Vol.38Issue(2)：244-254,11.DOI:10.3979/j.issn.1673-825X.202504250098
时频双域碎片感知的虚拟光网络资源分配算法
Resource allocation algorithm for virtual optical networks based on time-frequency dual-domain fragmentation awareness
摘要
Abstract
To address the resource fragmentation problem caused by the mismatch between traditional wavelength division multiplexing(WDM)spectrum allocation mechanisms and the dynamic characteristics of virtual optical networks,this paper proposes a time-frequency dual-domain fragmentation-aware(TFD-FA)resource allocation algorithm.Considering the dynamic arrival and departure of virtual network requests,a spectrum fragmentation evaluation mechanism is established,along with a spectrum block selection strategy.Furthermore,a novel time-domain fragmentation quantification model is constructed,where time variance is used to measure the degree of fragmentation,and time-slot continuity is optimized based on service lifetimes.A joint time-frequency constrained optimization model is then developed to collaboratively perceive fragmentation in both spectrum and time dimensions,balancing their respective continuity requirements in resource allocation.Simulation results demonstrate that,compared with load balancing and time-frequency fragmentation-aware algorithms in elastic optical networks,the proposed algorithm improves the acceptance rate of virtual optical network requests by 7.5%,increases physical network resource utilization by 4%,and enhances network revenue by 6.97%,thereby effectively optimizing resource allocation efficiency.关键词
虚拟光网络/时频双域/资源碎片协同感知/资源分配Key words
virtual optical networks/time-frequency dual-domain/collaborative fragmentation awareness/resource allocation分类
信息技术与安全科学引用本文复制引用
杨钱英,严学阳,夏士超,张冬雪..时频双域碎片感知的虚拟光网络资源分配算法[J].重庆邮电大学学报（自然科学版）,2026,38(2):244-254,11.基金项目
新重庆青年创新人才项目(CSTB2024NSCQ-QCXMX0063) （CSTB2024NSCQ-QCXMX0063）
重庆市自然科学基金创新发展联合基金(CSTB2022NSCQ-LZX0055) Chongqing Young Scholars Innovation Talent Program(CSTB2024NSCQ-QCXMX0063) （CSTB2022NSCQ-LZX0055）
Natural Science Foundation of Chongqing Innovation and Development Joint Fund(CSTB2022NSCQ-LZX0055) （CSTB2022NSCQ-LZX0055）
