Method and device for scheduling dynamic bandwidth of optical burst transport ring-network

A method and device for scheduling dynamic bandwidth of an optical burst transport ring-network (OBTN). The method is applied to each node in the OBTN, and includes: when the node serves as a master node, for each source node, when a time slot is allocated for connection of the source node to a certain target node, among time slots in which non-transmitted OB exists, a time slot occupied by a target node with a minimum hop count with a currently configured target node is preferably selected and used; and when the node serves as the master node, a time slot allocation result is converted to a form of a bandwidth map to be sent to slave nodes of the OBTN. The method provided by the invention can realize efficient and collision-free dynamic resource scheduling of the OBTN, and completely solves the problem of collision of a cross-major node service without interruption of the service. The method can not only fairly and reasonably allocate bandwidth resources and quickly respond to a bandwidth requirement of a burst service, can realize collision-free exchange of data, channel space reuse and strict QoS guarantee and can obtain a relatively high bandwidth utilization rate.