Method and device for qos assurance of quantum key distribution network based on machine learning and autonomic life cycle management

A quality of service (QoS) assurance device for a quantum key distribution network (QKDN), the QoS assurance device comprising:

• a first entity comprising a first processor and a first memory configured to store first instructions executable by the first processor to cause the first entity to:
• determine a provisioning plan based on available resources matching a service level agreement (SLA)-based user's provisioning request;
• and
• a second entity comprising a first processor and a first memory configured to store first instructions executable by the first processor to cause the first entity to:
• provision resources of the QKDN based on the provisioning plan;
• and
• re-provision the provisioned resources in response to receiving a re-provisioning request or a re-optimization request for the provisioned resources from other entities.