The invention provides a dynamic software definition light access to aggregation network bandwidth adjustment method and a device Multiple homologous homoclinic paths form a path set, and corresponding flows are distributed to the multiple paths Through aggregation network flow monitoring, the flow distribution path quantity and the flow on each path are dynamically adjusted, not only can a request success rate and a user bandwidth satisfaction degree be improved, user experience is improved, but also a purpose of load balancing can be realized through dynamically adjusting the flow paths, and a resource utilization rate is improved

Dynamic software definition light access to aggregation network bandwidth adjustment method and device

In the sixth-generation fixed network (F6G), network security becomes an important topic. Encryption is an effective method to prevent network attacks and realize network security. Quantum key distribution (QKD) is a promising technology to effectively address the challenge by providing secret keys due to the laws of quantum physics. New services such as high immersion experience and holographic have the characteristics of time-varying bandwidth and requirements. The introduction of optical service unit (OSU) technology makes it possible to provide the exact bandwidth used by the service. In optical transport networks, a lightpath needs to be established before service transmission, and will be removed after service transmission. Signaling is used for lightpath establishment, removal, and bandwidth adjustment. Data information transmitted in data layer and signaling information transmitted in control layer are highly vulnerable to cyberattacks, such as eavesdropping. The supply of bandwidth and key resources need to be optimized to achieve secure and stable service transmission in optical networks. Hence, how to realize bandwidth and key on demand (BKoD) provisioning for dynamic services is a key problem. To improve the flexibility of bandwidth and key resource allocation and utilization, a QKD-secured OSU-based optical transport network can be deployed. In this paper, a novel QKD-secured OSU-based optical transport network architecture is proposed and a service aware dynamic resource provisioning (SADRP) algorithm is proposed to realize BKoD. The proposed architecture uses the QKD technique to provide keys for both signaling information and data information for the first time. The proposed algorithm supplies resources according to the dynamic demand of bandwidth and key, so as to achieve the balance between dynamic demand and static resource utilization. Simulations results show that compared with the benchmark algorithm, the SADRP algorithm reduces blocking probability by 4.16%, reduces bandwidth resource utilization rate by 4.39%, reduces key resource utilization rate by 3.48%, and improves security rate by 4.17%.

Joint Bandwidth and Key On Demand (BKoD) Provisioning for Dynamic Service of Optical Transport Networks in F6G

We propose a dynamic bandwidth management approach for software defined optical access and aggregation networks. Simulation shows it enables automatic bandwidth adjustment and traffic engineering among multiple paths based on monitored aggregation traffic so as to make efficient use of network bandwidth and improve service experience.

Novel Dynamic Bandwidth Management Approach for Software Defined Optical Access and Aggregation Networks

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Novel Dynamic Bandwidth Management Approach for Software Defined Optical Access and Aggregation Networks